Minecraft Wiki
Minecraft Wiki
Wooden Pickaxe JE3 BE3.png
This page documents a major update currently being worked on. 
Therefore, not all official feature names or items are mentioned.

The logo for Caves & Cliffs.

The cover art for Caves & Cliffs: Part I.

Caves & Cliffs is the name of one released and one upcoming major themed update set to release for Java and Bedrock editions. The first part was released as Java Edition 1.17 and Bedrock Edition 1.17.0 on June 8, 2021,[1] which added geodes, copper, new blocks and mobs. The second part will be released as Java Edition 1.18 and Bedrock Edition 1.18.0[2] at the end of 2021 and will include expanded caves, increased height and depth limit, new mountain generation, and new biomes. It was announced in Minecraft Live 2020,[3] and on April 14, 2021, Mojang Studios announced that the update would be split into two updates due to the amount and complexity of content, as well as team health.[4]

On Java Edition, Part I started development with snapshot 20w45a, which was released on November 4, 2020. The first pre-release for Caves & Cliffs: Part I was released on May 27, 2021, and the first release candidate on June 4, 2021. As for Part II, development continued with 1.18 Experimental Snapshot 1, which was released on July 13, 2021.

On Bedrock Edition, Part I started development with beta, which was released on October 28, 2020. Most of the Part I features were behind experimental gameplay toggle until the Part I release and were not included in the full 1.16.200, 1.16.210, and 1.16.220 release.[5][6] As for Part II, development continued with beta, which was released on September 16, 2021. In 1.17.10, released on July 13, 2021, non-beta users were able to test out most of early Part II features behind experimental gameplay.[7]

Both Java and Bedrock received Caves & Cliffs: Part I on June 8, 2021.

Additionally, features from this update will be also released for Education Edition soon in 1.17 in 2021.[8]

Notable features[]

This section is about features that are included in the development versions. For planned additions, see  § Planned additions. For planned changes, see  § Planned changes.


Small Amethyst Bud (U) JE1.pngMedium Amethyst Bud (U) JE1.pngLarge Amethyst Bud (U) JE1.pngAmethyst Cluster (U) JE1.png Amethyst Buds and Amethyst Cluster
Azalea JE2 BE2.pngFlowering Azalea JE2 BE2.png Azalea
Azalea Leaves JE1.pngFlowering Azalea Leaves JE1.png Azalea Leaves
Big Dripleaf JE2 BE1.png Big Dripleaf
  • A plant that can be used for platforming.
  • If a player or mob stands on top of the plant for two seconds (40 ticks), the plant tilts and the player or mob falls through the plant.
  • Can be placed on any solid block and water.
  • Can have bone meal applied to grow taller.
  • Can be used for new parkour projects and obstacle courses.
Block of Amethyst JE3 BE1.png Block of Amethyst
  • Can be crafted with four amethyst shards.
  • Naturally generates in amethyst geode structures.
  • Makes a sparkling sound when placed or walked on.
  • Can be mined in amethyst geode by an iron pickaxe or better.
Budding Amethyst JE3 BE1.png Budding Amethyst
  • When it receives a random tick, it has a 20% chance to generate or grow an amethyst bud on one of its sides.
  • Relatively rare, generates only in amethyst geode structures.
  • Only obtainable in Creative Mode.
Calcite JE2 BE1.png Calcite
Candle JE1 BE1.pngTwo Candles.pngThree Candles.pngFour Candles.pngWhite Candle.pngTwo White Candles.pngThree White Candles.pngFour White Candles.pngOrange Candle.pngTwo Orange Candles.pngThree Orange Candles.pngFour Orange Candles.pngMagenta Candle.pngTwo Magenta Candles.pngThree Magenta Candles.pngFour Magenta Candles.pngLight Blue Candle.pngTwo Light Blue Candles.pngThree Light Blue Candles.pngFour Light Blue Candles.pngYellow Candle.pngTwo Yellow Candles.pngThree Yellow Candles.pngFour Yellow Candles.pngLime Candle.pngTwo Lime Candles.pngThree Lime Candles.pngFour Lime Candles.pngPink Candle.pngTwo Pink Candles.pngThree Pink Candles.pngFour Pink Candles.pngGray Candle.pngTwo Gray Candles.pngThree Gray Candles.pngFour Gray Candles.pngLight Gray Candle.pngTwo Light Gray Candles.pngThree Light Gray Candles.pngFour Light Gray Candles.pngCyan Candle.pngTwo Cyan Candles.pngThree Cyan Candles.pngFour Cyan Candles.pngPurple Candle.pngTwo Purple Candles.pngThree Purple Candles.pngFour Purple Candles.pngBlue Candle.pngTwo Blue Candles.pngThree Blue Candles.pngFour Blue Candles.pngBrown Candle.pngTwo Brown Candles.pngThree Brown Candles.pngFour Brown Candles.pngGreen Candle.pngTwo Green Candles.pngThree Green Candles.pngFour Green Candles.pngRed Candle.pngTwo Red Candles.pngThree Red Candles.pngFour Red Candles.pngBlack Candle.pngTwo Black Candles.pngThree Black Candles.pngFour Black Candles.png Candles and cakes with candles
  • A light source with a light level of 3.
  • Up to four can be placed in a single block, similar to sea pickles. If 1 more candle is placed in a block, it increases the light level by 3, making a max light level of 12.
  • Can be lit with a flint and steel, fire charge, an arrow fired from a flame-enchanted bow, or a fire charge shot by a dispenser if it hits the candle.
  • Have variants for uncolored and all 16 colors.
    • Uncolored candle is crafted with 1 string and 1 honeycomb.
    • Colored candle is crafted using one of the 16 dyes and one uncolored candle.
  • Right-clicking a candle on an uneaten cake makes a "birthday cake", which can have a single candle placed on it.
    • Example: Cake with Candle JE1.png
    • If the cake is eaten, the candle pops off.
Cauldron JE7.png Cauldron
Cave Vines (head) JE1 BE1.pngCave Vines (berries) JE1 BE1.png Cave Vines
  • Grow on the bottom side of a block.
  • Grow in lush caves.
  • Can be planted using glow berries.
  • Produce edible glow berries, which are a light source.
  • Using bone meal on a cave vine produces glow berries (similar to sweet berry bushes) instead of growing the vine itself, unlike other vines.
    • Can be extended downward using glow berries, and has an age mechanic, similar to kelp, such that every time it ages it has a chance to grow Glow Berries.
Cobbled Deepslate JE2 BE1.png Cobbled Deepslate
Copper Block JE1 BE1.pngExposed Copper Block JE1 BE1.pngWeathered Copper Block JE1 BE1.pngOxidized Copper Block JE1 BE1.png Copper Block and variants
  • Copper blocks are used for crafting and storage.
  • The stonecutter can be used to craft the different copper block variants.
    • Only cut copper can be used to make stairs and slabs.
      • Example: Cut Copper JE2 BE1.pngExposed Cut Copper JE1 BE1.pngWeathered Cut Copper JE1 BE1.pngOxidized Cut Copper JE1 BE1.png
      • Made with four copper blocks.
      • Cannot be turned back into regular copper blocks or copper ingots.
  • Develops a patina of pale green copper carbonate over multiple stages, exposed, weathered, and oxidized.
    • Honeycombs can be used to make waxed copper, which does not progress beyond the patina stage it has at the time. The wax can be scraped off with an axe, but it does not drop the honeycomb.
    • Axes can be used to undo the oxidisation stages one at a time.
Copper Ore JE2 BE2.png Copper Ore
  • New ore that is found underground.
  • Drops Raw Copper when broken, like other metal ores.
  • Spawns in ore veins similar to iron (current generation is not the final version).
  • Can be smelted into a copper ingot, which can be used to craft copper blocks, lightning rods, and spyglasses.
  • Does not generate below Y = 0.
Deepslate (UD) JE3.png Deepslate
  • Can be found below Y = 0.
  • Generates as base stone below Y = 0, gradually replacing stone.
  • Takes twice as long to mine than normal stone.
  • Drops cobbled deepslate when mined without the Silk Touch enchantment.
Deepslate Coal Ore JE1 BE2.pngDeepslate Copper Ore JE2 BE2.pngDeepslate Lapis Lazuli Ore JE3 BE2.pngDeepslate Redstone Ore JE2 BE1.pngDeepslate Diamond Ore JE2 BE1.pngDeepslate Gold Ore JE2 BE1.pngDeepslate Emerald Ore JE1 BE1.png Deepslate Ores
  • New overworld ore variants that generate in the deepslate layer (below Y = 0).
  • Functionally similar to their normal ore variants but take twice as long to mine.
  • Ores that generate with deepslate variants include iron, gold, lapis lazuli, diamond, and redstone.
    • Ores that do not generate below Y = 0 still have deepslate variants, however these variants do not generate naturally.
Dripstone Block JE1 BE1.png Dripstone Block
Glow Lichen (texture) JE1.png Glow Lichen
Lightning Rod (U) JE3.png Lightning Rod
  • Crafted with 3 copper ingots.
  • Redirects nearby lightning strikes to the top of the rod, which can prevent flammable structures from catching fire during thunderstorms.
  • Emits a redstone signal when struck by lightning, with the exception of when it gets struck by lightning from a channeling trident in a thunderstorm, in which it emits nothing.
  • Can be oriented in different directions depending on the players orientation.
Block of Raw Iron JE3 BE2.pngBlock of Raw Gold JE3 BE2.pngBlock of Raw Copper JE2 BE2.png Block of Raw Iron, Block of Raw Gold, and Block of Raw Copper
Moss Block JE1 BE1.png Moss Block
  • An opaque block that appears grassy on all sides.
    • Using bone meal can cause it to grow grass, tall grass, moss carpets and both types of azalea bushes on it and in its vicinity.
    • Bone meal can also cause it to grow over (expand) and convert stone surfaces, sand, dirt, etc. but not grass surfaces.
  • Breaks when pushed by a piston.
Moss Carpet JE1 BE1.png Moss Carpet
  • Same texture as the moss block, but one pixel thick like carpet.
  • Can occupy the same block with grass.
Pointed Dripstone Tip (D) JE1 BE1.png Pointed Dripstone
  • Come in two forms, stalactites and stalagmites.
    • Stalactites hang from the ceiling and drip water or lava, based on what is above them. The stalactites drip water naturally without a source block above it, but these drips do not fill a cauldron.
      • Placing a cauldron under a stalactite slowly fills the cauldron with water or lava depending on the source block above them (enables renewable lava).
      • If the block on which a stalactite hangs is broken, the stalactite falls, causing damage to players and mobs directly underneath. They do not take any damage if they are airborne.
    • Stalagmites are found on the floor of the cave and deal damage if landed on.
    • The damage inflicted of pointed dripstone is directly proportional to the height from which the stalactite or player/mob falls from.
Powder Snow JE1 BE1.png Powder Snow
  • Similar to snow, but entities fall through it. The fall is similar to the effect of cobwebs, but faster.
  • If the player does not have any leather armor equipped and they walk or fall in, they start to freeze and take damage.
    • Freezing lowers the player's FOV (field of view), turns the health bar blue, and puts a frosty vignette on their screen.
    • Any leather armor prevents freezing.
      • Wearing leather boots allows the player to walk on top of powder snow and make it function like scaffolding.
    • Most mobs can also take freezing damage. Polar bears, strays, and snow golems are immune to freezing.
  • Certain mobs have unique properties with powder snow.
  • "Snowier snow" was announced to be part of the Mountains biome in the biome vote at MINECON Live 2019, a joke teaser for powder snow.[11]
  • Cauldrons slowly fill up with powder snow when they are placed in a snowing.biome
Rooted Dirt JE1 BE1.png Rooted Dirt
  • Part of the Azalea plant.
  • Resembles a dirt block, but with the roots of the Azalea tree intertwined.
  • The first roots that exist in Minecraft.
  • Planned to lead to the Lush Caves biome.
  • When bonemealed, hanging roots grow on the bottom block.
Inactive Sculk Sensor JE1.png Sculk Sensor
  • Generates in the deep dark cave biome.
  • Can be used for wireless redstone.
  • Senses vibrations created by anything (excluding ambient weather). See Sculk Sensor#Redstone emmision for more information.
  • Wool can occlude its ability to sense in a certain direction. This can be placed between or completely around the source of the input.‌[Java Edition only][until BE 1.18.0]
  • Cannot detect players sneaking.
  • Emits particles ( Vibration (texture) JE1 BE1.gif) when it senses a vibration nearby, except when waterlogged.
  • Are not affected by ambient weather such as rain,[12] nor other sculk sensors and/or the warden.[13]
Small Dripleaf JE3.png Small Dripleaf
  • Appears highly varied in models.
  • Can be placed only in water or on clay, which counts as a 'moist' block.
  • Bone meal can be applied to turn it into Big Dripleaf.
  • Can be sold by the Wandering Trader.
Smooth Basalt JE1 BE1.png Smooth Basalt
  • Spawns as an outer covering of amethyst geodes on the outer side of calcite, similar to real-life geodes.
  • Very similar in texture to calcite but different in color.
  • Can be obtained by smelting basalt in a furnace.
Spore Blossom JE1.pngSpore Blossom (bottom view) JE1.png Spore Blossom
  • Can be placed on ceilings.
  • Sends particles downward when opened.
  • Creates ambient particle effects, similar to the nether biomes, but non-biome dependent, however, its natural generation is dependent of the Lush Caves, meaning that Spore Blossoms currently don't generate naturally in default worlds.
Tinted Glass JE2 BE1.png Tinted Glass
  • A type of glass that does not allow light to pass through.
  • Crafted with a glass block in the middle and 4 amethyst shards in a cross shape.
  • Drops itself when broken, even without Silk Touch, unlike glass.
Tuff JE1 BE1.png Tuff
  • Decorative block.
  • Generates below y = 0 in the form of patches.


Amethyst Shard JE2 BE1.png Amethyst Shard
Bucket of Axolotl JE1 BE1.png Bucket of Axolotl
Bundle JE2.png Bundle[Java Edition only]
Locked Map (item) BE2.png
This article describes a feature planned for Bedrock Edition. 
It has not appeared in any development versions yet, but is planned to be included in a future update.
  • Can contain one cumulative stack of any variety of item types.
    • Stack sizes are sustained. For example, a bundle containing 32 blocks with a stack size of 64 could hold only an additional 8 ender pearls, as the stack size of an ender pearl is 16; the half stack of ender pearls added to the half stack of blocks is calculated as one full stack. Un-stackable items like minecarts remain un-stackable.
  • Displays a blue bar, similar to a durability bar, that shows how full it is.
  • Items drop to inventory when right clicked.
  • Are crafted with rabbit hide and string.
Copper Ingot JE2 BE1.png Copper Ingot
Glow Berries JE1 BE1.png Glow Berries
Glow Ink Sac JE1 BE1.png Glow Ink Sac
Goat Horn BE1.png Goat Horn[Bedrock Edition only]
Locked Map (item) BE2.png
This article describes a feature planned for Java Edition. 
It has not appeared in any development versions yet, but is planned to be included in a future update.
  • Goats have a chance to drop this item when they ram into a block.
  • Holding use while holding this item plays the raid horn sound effect.
Powder Snow Bucket JE1 BE1.png Powder Snow Bucket
  • Using a bucket on powder snow creates a powder snow bucket.
  • Powder snow buckets can be used to place powder snow.
  • Powder snow buckets can also be filled from cauldrons filled with powder snow.
Raw Iron JE3 BE2.pngRaw Gold JE3 BE2.pngRaw Copper JE3 BE2.png Raw Iron, Raw Gold, and Raw Copper
Spawn Eggs
Spyglass JE2 BE1.png Spyglass
  • Crafted from an amethyst shard and 2 copper ingots.
  • When used while held, it allows the player to see far away objects through a small square.
    • By pressing F1, the player can zoom in the whole screen; avoiding the border that is normally presented when using.
    • Switching to third person view while using the spyglass shows the player holding up the spyglass to where the eyes would be.


An axolotl.

Glow Squid seen in Java Edition.

A goat.

  • Based on the critically endangered Mexican salamander with the same name in real life.
  • Planned to be found in bodies of water within lush caves biomes.
  • The first amphibian added to Minecraft.
  • Can be caught in a bucket like fish.
  • Comes in four common varieties, lucy (pink), wild (brown), gold, and cyan, and a rare blue variety, which has a 11200 (~0.08334%) chance of spawning. This fraction is based on the fact that there are about 1200 axolotls left in the wild.[14]
  • Plays dead when damaged, receiving Regeneration.
    • This regeneration ability is likely based on how real axolotls can regrow lost limbs.
  • Preys on fish, glow squid and squid, and attacks drowned and guardians (doesn't include Elder Guardians) if tempted with tropical fish by a player.
  • Axolotls prioritize hostile mobs over fish.
Glow Squid
  • Spawns in mountain biomes.
  • Can jump high to avoid obstacles, about 5 blocks tall.
  • Attacks nearby mobs and players by charging and knocking them a considerable distance.
  • Mobs attacked by goats don’t attack back.
    • Doesn't attack other goats.
  • Takes reduced fall damage.
  • Avoids powder snow by jumping over it.
  • Can be bred with wheat, which produces a baby goat.
  • Drops one goat horn when ramming into a block. Goat horns do not regrow. ‌[Bedrock Edition only]
    • Has a 2% chance of spawning as a screaming goat, with different sounds.
  • Screaming goats use their ramming attack more often than normal goats.
  • Drops nothing upon death.

Non-mob entities[]

Glow Item Frame JE1 BE3.png Glow Item Frames

World generation[]

An amethyst geode, showcasing its insides.

Amethyst Geodes
  • An underground cave-like feature.
  • Generate in groups of 2-3 close together to each other in water, exposed. These are usually the only chances an amethyst geode can be exposed.
  • Contains smooth basalt, calcite, blocks of amethyst, budding amethyst, and the amethyst clusters they generate.
  • An amethyst geode that generates underwater causes water block textures to appear in openings. Placing or breaking a block next to the water blocks causes them to start flowing into the geode.
  • Twinkle-like sounds can be heard near amethyst clusters, which used placeholder sounds when it was showcased, and not the final version.[15]

Ore veins.

Ore Veins
  • Large, rare, snake-like ore formations.
  • Copper ore veins mixed with granite generate above Y=0.
  • Iron ore veins mixed with tuff generate below Y=0.

New mountain generation.

  • Completely overhauled.
  • Now stretch down to Y = -59.
  • The cavern now generates in 2 layers of different stone bases depending on the depth.
    • Cavern layer above Y = 0 is made up of regular stone.
    • Stone transitions to deepslate from Y = 0 to Y = -7.
    • Deepslate now completely replaces stone from Y = -8 to bedrock.
  • Biomes inside of caves introduced.
  • Contain aquifers, bodies of water or lava with different heights, independent of sea level (Y=63).
  • Improved old caves to blend in with the new generations of caves better.[16]
  • New noise caves, coming in 2 forms, cheese and spaghetti.
    • Cheese caves have large stone towers stretching from the bottom of the cave to the top.
      • Very large, often large enough to fly with an elytra.
      • Abundant with aquifers and ores.
    • Spaghetti caves are long, thin caves that have small aquifers and are more similar to original caves.

Tweaked mineshaft generation, with chains and support pillars.

  • For support, in the air, can generate with log pillars below or chains on fence posts above.
  • Try to generate fully encased in stone at low y-levels.


A dripstone caves biome.

A lush caves biome.

Dripstone Caves
Lush Caves
  • Contain cave plants and moss.
  • Moss covers the ceilings and floors.
  • Clay pools generate inside.
  • 6 new sub-biomes added:
    • Meadow
    • Grove
    • Snowy Slopes
      • The second highest layer of a mountain.
      • Covered in snow, snow blocks, powder snow and ice.
      • Goats spawn only in this biome.
    • Lofty Peaks
      • The highest layer of a mountain, generating if the mountain is high enough.
      • Generates if the surrounding biomes are too warm for snow capped peaks.
      • Covered in snow and ice.
    • Snowcapped Peaks
      • The highest layer of a mountain, generating if the mountain is high enough.
      • Generates if the surrounding biomes are too cold for lofty peaks.
      • Covered in snow, snow blocks, powder snow, ice and packed ice.
    • Stony Peaks
      • The highest layer of a mountain, generating if the mountain is high enough.
      • Generates if the surrounding biomes are too warm for lofty peaks.
      • It's mostly covered by stone with strips of gravel, andesite, granite and calcite.
      • It doesn't generate snowy slopes in the lower areas of the mountain.


The ore distribution changes as of and beta

  • An action can cause vibrations in the air, which can be picked up by sculk sensors and wardens.
  • Can be caused by player and mob movements, blocks being placed or broken, containers opening, projectiles being fired and landing, blocks like pistons moving, buttons, levers and pressure plates activating, and blocks activating. Vibrations are not caused by ambient weather such as rain or snow. [12]


The unique textures of all the ores in Caves & Cliffs.


An example of how some stones may generate in Stony Peaks and Stone Shores.

  • Terrain generation is now independent from biomes, with biomes adapting to whatever terrain they happen to generate throughout.[17]
    • This allows for natural variation in the terrain of any individual biome, both in terms of shape and elevation.
      • For example, forests and deserts could form up on a hill without needing a special biome just for that purpose.
    • This additionally allows for smoother transitions between biomes.
  • Terrain is now smoother and more extreme.
  • In Stone Shore and Stony Peaks, Diorite, Granite, Calcite, Andesite, and Gravel might of spawn in layers (strips) instead of splotches.
Height limit
  • Has been increased to 384 blocks, expanding 64 blocks up and 64 blocks down, with 320 being the limit upward and -64 being the limit downward.
  • Most of the overworld ores have been retextured and touched up mainly for accessibility reasons. These also apply to the new deepslate ores.
    • This is a great help for color blind people that have difficulties distinguishing a certain ore of similar texture from another.
    • Diamond ore is an exception to this for being the "iconic" ore of the game, making Minecraft developers want to keep the classic feel of it.
  • Ore distribution has been changed for more strategic mining.
    • Certain ores are more common at certain depths, and some may generate in lower quantities or not generate at that level at all.

Planned additions[]


This image shows the sculk blocks in redstone, implying that the other sculk blocks also have redstone uses.

Sculk BE1.gif Sculk (block)
  • Generates in the mysterious new cave biome where the Warden lives, called the Deep Dark.
  • Has an animated texture.
  • May be used in redstone.[18]
  • Namespaced ID sculk was revealed and found in the Bedrock Beta documentation. These blocks are currently not in the beta as it hasn't been implemented yet.
Sculk Catalyst BE1.png Sculk Catalyst
  • Generates in the Deep Dark cave biome.
  • Made of sculk and a bone-like material.[19]
  • Sculk Catalyst (bloom) BE1.gif Has bloom state.
  • May be used in redstone.[18]
  • May have something to do with axolotls.[20]
  • Glows, but does not emit light, similar to the glow squid or the glow item frame.
  • Namespaced ID sculk_catalyst was revealed and found in the Bedrock Beta documentation.[21][22]
Sculk Shrieker BE1.gif Sculk Shrieker
  • Generates in the deep dark biome.
  • Perhaps made of sculk and a bone-like material.
  • Has 2 soul-shaped patterns in the center.
  • Has the ability to 'shriek' as revealed by internal textures.
  • Namespaced ID sculk_shrieker was revealed and found in the Bedrock Beta documentation.
Sculk Vein BE1.gif Sculk Vein[23]
  • Generates in the Deep Dark cave biome.
  • Generates in a layer on top of blocks, similar to snow.
  • Can be placed in all directions, like glow lichen.
  • Has an animated texture.
  • Some have parts that are transparent, allowing the player to see the block it is on top of.
  • May be used in redstone as seen in this video when they talk about the sculk sensor.[18]
  • Namespaced ID sculk_vein was revealed and found in the Bedrock Beta documentation.


Spawn Eggs
  • Warden Spawn Egg (pre-release).png The warden spawn egg is visually confirmed but not yet implemented.[24]


A warden and iron golem standing side by side.

Warden.gif Warden
  • Spawns in the new Deep Dark cave biome.
  • The first fully blind mob (bats, despite relying almost exclusively on echolocation, still have basic eyesight)[citation needed].
  • When sensing movement, it moves toward the source of the movement.
    • Follows and attacks players, mobs, and other entities that make vibrations.[note 1]
      • Does not attack other wardens.
    • When attacked, it pathfinds toward the player.
    • Follows the same rules as the sculk sensor when detecting noise, apart from a much bigger detection range.
      • When it detects a vibration, the growths on its head rattle and light up, similar to the sculk sensor.
    • If any projectile (e.g. egg, snowball, arrow, splash potions, tridents) lands near the warden, the mob inspects the location where the projectile landed, due to the projectile creating movement and noise. This feature can be used in order to cause a distraction.
    • Does not detect players that are sneaking.
    • Can detect players that are invisible.[25]
    • When aggravated for long enough, the warden follows the player continuously, regardless of any other distractions.
    • Does not follow music from a jukebox.[26]
    • Investigates explosion noises.[26]
  • Incredibly strong, doing 30♥ × 15 damage, bringing players wearing full netherite armor from full health to 7♥♥♥♥ health points.
  • A mob designed to be extremely difficult to flee from, rather than fought against. Players are meant to sneak around the warden when traversing the Deep Dark, avoiding any vibrations that would cause it to detect them.[27][28][29]
  • Has a way to counter the strategy of building up 4 blocks to avoid attacks.[30]
  • At least as fast as the player's walking speed.
  • Seems to have considerable knockback resistance.
  • When near the warden, the brightness of the light the player sees decreases, regardless of Night Vision or brightness settings.[31]
  • The warden's chest has a glowing core that appears to brighten and dim in tandem with the ambient lighting of the Deep Dark cave biome.
    • The core creates a low throbbing sound as it pulses. The sound and animation seem to speed up rapidly when the warden notices a player.
  • Is about 3.5 blocks tall, making it one of the tallest mobs in the game, exceeding the iron golem and enderman in height and width (respectively). [note 2][32]
    • This would also make it as tall as the wither (when hostile).
  • Currently burns in sunlight.[26]
  • It is the only mob that spawns in the Deep Dark.[33]
  • Does not spawn like normal hostile mobs, but instead uses completely new spawning rules.[34]
  • The warden isn't needed to receive the advancement, Monsters Hunted.[35]

World generation[]

Deep Dark biome
  • Ore generation further rebalanced, and influences the surrounding stone.


Darkness effect
  • While in the deep dark cave biome, the ambient lighting, such as the light given off by torches, occasionally dims temporarily, limiting the player's visibility. This serves as a warning that the warden is nearby.[42]

Planned changes[]

World generation[]

Mineral veins
  • Some stone appears a little different and when that stone is mined, more of the ore should be found behind it.[citation needed]

Unconfirmed features[]


Sculk Jaw (pre-release).pngSculk Jaw
  • Generates in the Deep Dark biome.
  • Sculk Jaw 2 (pre-release).png Has state with unknown name.
  • May not make it into the final release.[43]

Concept art showing how the spore blossom may open and close

Spore Blossom
  • Can close.
Azalea Log
  • Between Java Edition snapshots 21w05a and 21w10a, many blocks (flowers, leaves, grass, ferns, sweet berry bushes, small dripleafs) had a block tag called "azalea_log_replaceable", possibly implying the existence of azalea logs.
    • However, according to Jappa, the game’s artist, the reason azalea wood has not been added so far is because “Most colors of wood are currently covered. Azalea wouldn't be a special wood color like the nether woods. It would just be a slightly different color of another wood.”[44] He also stated that “Adding wood is quite a lot of work. Azalea trees are also very singular and not in big forests, so finding a lot of azalea wood would be very hard.”[45]


Underground Cabin[unofficial name]

Further revisions[]

Java Edition[]

  • 1.17.1 made changes to some game mechanics and fixes bugs.

Bedrock Edition[]

  • 1.17.1 was released exclusively on Nintendo Switch to fix a bug in which players weren't able to connect to any server.
  • 1.17.2 was released to fix bugs related to world generation.
  • 1.17.10 added candles, brought additional parity with Java Edition, experimental features for 1.18.0 and fixed bugs.
  • 1.17.11 was released to fix some critical bugs.



A trailer for Part I was released on June 8, 2021.


Videos made by slicedlime:

Java Edition[]


Trailer Trivia


Screenshots of the Caves & Cliffs Update from Minecraft Live 2020 and other sources:

Concept artwork[]



  1. The warden does not attack other entities but it does follow the vibrations that they make. (For example, it follows a snowball but it breaks upon impact to a block rendering it non-attackable by the warden.
  2. Height of the warden is based from the image found on Twitter.

External links[]


  1. "Grab your nearest calendar and start circling with a vengeance: Caves & Cliffs: Part I arrives June 8th on both Java and Bedrock!"@Minecraft on Twitter, May 31, 2021
  2. "Minecraft: Caves & Cliffs Update FAQ" .
  3. "Minecraft Live: The Recap" – Minecraft.net, October 3, 2020
  4. "A Caves & Cliffs Announcement"– Minecraft on YouTube, April 14, 2021
  5. "My understanding is that Experimental Features only exist in Beta releases."@MattGartzke on Twitter, December 2, 2020
  6. "Goats are still in the latest beta, they just can't be accessed from a full version, only betas."@MattGartzke on Twitter, December 2, 2020
  7. "New world generation in Bedrock available for testing" – Minecraft.net, July 13, 2021
  8. "Get Ready for the Beta! (Version 1.17)" – Minecraft: Education Edition Support.
  9. "And yes, Glow Lichen is the new cave light source I mentioned in the cave prototype video a while back. We made them mainly for the not-yet-released larger caves. Glow Lichen generate naturally, but you can also grow it yourself and make eerie glowing cave paths :)"@henrikkniberg on Twitter, January 20, 2021
  10. "Once Upon a Time in the Underground (Minecraft cave prototype) @ 0:27"– Henrik Kniberg on YouTube, October 8, 2020
  11. "And speaking of snow, yes, it will be snowier. We will also have a new block called 'powder snow'" — Vu Bui on "Minecraft Live 2020 @ 48:25"– Minecraft on YouTube
  12. a b "Small interesting tidbit: We made the design decision for Sculk Sensors to not be affected by ambient weather like rain. My logic for this is "habituation", where the Sculk Sensor essentially becomes used to the constant stimulus, no longer registering it as a vibration"@kingbdogz on Twitter, October 12, 2020
  13. "I think this could be a really unfun mechanic if rain can suddenly mess up your redstone contraptions. This is also why Sculk Sensors don't react to each other nor the Warden, since they're so accustomed to vibrations of their "species" that it's background noise they block out"@kingbdogz on Twitter, October 12, 2020
  14. "Dev Diaries: Caves & Cliffs Mobs"– Minecraft on YouTube, May 14, 2021
  15. "the sounds in the Live video are not the sounds we will be using for the amethyst crystal blocks - those were placeholders, as with most things shown in Live ;)"@Cojomax99 on Twitter, October 6, 2020
  16. "Oh forgot to mention in the changelog: we also added some more variation to the old cave carvers (width, heigh, floor cutoff, etc). Just to make them blend in a bit better with the noise caves instead of being instantly recognizable."@henrikkniberg on Twitter, February 25, 2021
  17. "Minecraft 1.18 experimental snapshot"– Henrik Kniberg on YouTube, June 13, 2021
  18. a b c "Caves, Cliffs & Other Updates: How We Make Minecraft - Episode 5"– November 27, 2020 on YouTube
  19. "That is actually a bone-like material, not End Stone :)"@kingbdogz on Twitter, November 13, 2020
  20. "My day: experimenting with Axolotls and Sculk Catalysts... for reasons. How's your day going?"@kingbdogz on Twitter, August 4, 2021
  21. "Ok, seems like there is two new features: minecraft:catalyst_feature and minecraft:sculk_patch_feature. Definitely relates to the Deep Dark. Can't wait to see how this turns out."@SmokeyStack_ on Twitter, August 19, 2021
  22. "The Beta Documentation. So far, there is no files that actually contain these features for now, likely due to the Deep Dark not implemented."@SmokeyStack_ on Twitter, August 19, 2021
  23. "This is really cool, but won't be necessary because Sculk Veins (on the edge of growths) can be placed in all directions like Glow Lichen. That means you can find veins on top of anything, including Grimstone Bricks, which is a better approach than a specific block type."@kingbdogz on Twitter, February 18, 2021
  24. "Feeling kinda short myself..."@kingbdogz on Twitter, October 6, 2020</nowiki>
  25. "Wardens will still be able to detect entities that are invisible :)"@kingbdogz on Twitter, October 26, 2020
  26. a b c "It will not. This is both for design reasons (we want it to be something more "physical", like motion), and for technical reasons. 2. It will probably investigate the location it "felt/heard" the vibration. 3. Nope, but in the current design it will burn in sunlight."@kingbdogz on Twitter, May 21, 2021
  27. "I'd actually consider it something entirely new. The Warden is a force of nature, not a boss. When a tornado is barreling toward you, you don't try to kill it - you run away! The Warden is exactly the same. "@kingbdogz on Twitter, October 3, 2020
  28. "You can befriend them by not making any noises :) They will never notice you!"@kingbdogz on Twitter, March 30, 2021
  29. "Warden is not a combat situation. You will almost never, ever be fighting the Warden, that would be suicide. It's something that will stick around for some time before it ever moves away. During that whole time you'll be sorry if you didn't place torches."@kingbdogz on Twitter, February 9, 2021
  30. "It absolutely has some tricks up its sleeves to counter that particular strategy :)"@kingbdogz on Twitter, October 26, 2020
  31. "Interestingly enough, the Warden is tackling this with its darkness effect physically lowering your gamma while it's around... This evens the playing field for everyone who encounters it. "@kingbdogz on Twitter, February 7, 2021
  32. "Looking kinda short there, Iron Golem."@kingbdogz on Twitter, October 6, 2020
  33. a b "1) Deep Dark is the name for now, but like anything names can change. I like it though. 2) Deep Dark is one of the only Overworld biomes where only one type of enemy can spawn: Wardens. So no Zombies, Creepers, etc. 3) That is a mystery for you players to reveal in-game."@kingbdogz on Twitter, June 17, 2021
  34. "They will not spawn like normal hostile mobs - not like anything that's in the game so far."@kingbdogz on Twitter, June 17, 2021
  35. "No"@kingbdogz on Twitter, July 7, 2021
  36. "Also, to clarify, the Deep Dark won't take up all of below y 0. Other biomes like Lush Caves and Dripstone Caves will be able to generate there too, it's just that Deep Dark can only be found below y 0. Grimstone is its natural stone ;)"@kingbdogz on Twitter, February 17, 2021
  37. "It will likely be the most rare biome out of the 3, but not impossible to find either. And when you find it, it should be a big area.)"@kingbdogz on Twitter, September 2, 2021
  38. "Getting the Deep Dark biome distribution right has been tricky. Generally we're looking to get it deep underneath very continental/mountainous areas, and it will stretch all the way to -64. Looking forward to see how it feels.)"@kingbdogz on Twitter, September 2, 2021
  39. "We're aiming to have no aquifers/lava in the Deep Dark)"@kingbdogz on Twitter, September 2, 2021
  40. "The point is to have special loot in the chests. We don't want players encouraged to kill the Warden."@kingbdogz on Twitter, February 16, 2021
  41. https://twitter.com/kingbdogz/status/1430549129755832323
  42. "The mechanical purpose is to warn you that the Warden is nearby. You should get ready if you start to see pure darkness like that..."@kingbdogz on Twitter, October 4, 2020
  43. "Sculk Trap (which is actually called Sculk Jaw) is unlikely to make it into the game, wasn't very happy with its design. Sculk Shrieker is a completely different block"@kingbdogz on Twitter, August 29, 2021
  44. "From my POV, art and building - I think that most colors of wood are currently covered. Azalea wouldn't be a special wood color like the Nether woods. It would just be a slightly different color of another wood. To me, that doesn't seem worth it and the impact of it would be low"@JasperBoerstra on Twitter, May 22, 2021
  45. "And because we have so many wood objects, adding wood is quite a lot of work. Azalea trees are also very singular and not in big forests, so finding a lot of azalea wood would be very hard and you wouldn't be able to use it a lot"@JasperBoerstra on Twitter, May 22, 2021
  46. "Minecraft Live 2020: Full Show"– Minecraft on YouTube, October 3, 2021
  47. "Minecraft Live: Caves & Cliffs - First Look @ 6:07"– Minecraft on YouTube, October 4, 2020
  48. "While not related, Sculk name was inspired by Jeb's process with naming the Shulkers - he liked the word "Lurker", but changed it around a bit to feel new. Sculk is only one letter changed of Skulk, meaning "keep out of sight, typically with a sinister or cowardly motive""@kingbdogz on Twitter, October 13, 2020
  49. "Yes, and yes. Was hoping to do a larger field trip to different countries with interesting caves, but covid got in the way so we had stay more local."@henrikkniberg on Twitter, October 23, 2020
  50. "Mesh caves were inspired by this field trip."@henrikkniberg on Twitter, October 21, 2020
  51. "I used to travel a lot in the past though (before becoming aware of climate change), and I like visiting caves, so I dug up memories from fascinating cave visits in Spain, South Africa, New Zealand, and British Virgin Isles and some other places."@henrikkniberg on Twitter, October 23, 2020
  52. "Definitely one of my biggest inspirations! My favorite show + favorite game - it shaped a lot how I approached concepts for Minecraft artstyle"@cookiecat_9 on Twitter, October 4, 2020
  53. "Because of this, we opted for a name that describes the journey it took to get, as well as the location in the world. It also more accurately represents that it is a type of slate. It's important that we follow our design principles in the game, even if Grimstone sounds cooler."@kingbdogz on Twitter, March 4, 2021
  54. "A Caves & Cliffs Announcement"– Minecraft on YouTube, April 14, 2021
  55. "146 - From Modding to Mojang with Kingbdogz // The Spawn Chunks: A Minecraft Podcast"– The Spawn Chunks on YouTube, June 21, 2021