Minecraft Wiki
Minecraft Wiki
Copper Block JE1 BE1.png
This page documents an update currently being worked on. 
Therefore, not all official feature names or items are mentioned.
Minecraft 1.18
Caves & Cliffs logo 2.png

Java Edition

Official name

Caves & Cliffs: Part II

Planned release date

Late 2021

Development versions
Other instances
of 1.18

1.18,[1][2] the second release of Caves & Cliffs, is an upcoming major update to Java Edition set to release in late 2021.[3] It was first announced alongside the release of 1.17 snapshot 21w15a when Mojang stated that the Caves & Cliffs update would be split in two.[4] Features from 1.18 were developed alongside 1.17, previewed in official data packs used with a corresponding 1.17 snapshot.[5]

Planned additions[]


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

Sculk Block
  • Will generate in the mysterious new cave biome, referred to as the "deep dark".
  • Has an animated texture.
  • May be used in redstone.[6]
Sculk Trap[unofficial name]
  • Will generate in the deep dark biome.
  • Has a different top texture than the Sculk Block and Sculk Chute.[7]
  • May be used in redstone.[6]
Sculk Chute[unofficial name]
  • Will generate in the deep dark biome.
  • Made of sculk and a bone-like material.[8]
  • May be used in redstone.[6]
  • Glows but does not emit light, similar to the glow squid or the glow item frame.
Sculk Veins[9]
  • Will generate in the deep dark biome.
  • Generates in a layer on top of blocks, similar to snow.
  • Can be placed in all directions, like glow lichen.
  • 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.[6]


Goat Horn
  • Dropped by a goat if it rams into a block.
  • When used for a short period of time, it makes a sound identical to the horn heard during raids.
Spawn Eggs


A picture of the Warden and Iron Golem standing side by side

  • Will spawn in the new deep dark cave biome.
  • The first fully blind mob (bats, despite relying almost exclusively on echolocation, still have basic eyesight).
  • When sensing movement, it moves toward the source of the movement.
    • It follows and attacks players, mobs, and other entities that make vibrations.[note 1]
      • It does not attack other Wardens.
    • When attacked, it path finds toward the player.
    • Seems to follow the same rules as the sculk sensor when detecting noise.
      • 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) 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.[11]
    • When aggravated for long enough, the warden follows the player continuously, regardless of any other distractions.
  • Will burn in direct daylight. [12]
  • Incredibly strong, doing 30♥ × 15 damage, bringing players wearing full netherite armor from full health to 7♥♥♥♥ health points.
  • It is the only mob that spawns in the Deep Dark.[13]
  • Does not spawn like normal hostile mobs, but instead uses completely new spawning rules. [14]
  • A mob designed to be extremely difficult, intended to be fled from.[15]
  • Has a way to counter the strategy of building up 3 blocks to avoid attacks.[16]
  • At least as fast as the player's walking speed.
  • Seems to have knockback resistance.
  • 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 (the same).[note 2][17]

World 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.
      • Certain types of ores and structures still generate in the deepslate layer, as well as tuff.
      • Dirt, diorite, granite and andesite do not generate in this layer.
  • Dripstone Caves and Lush Caves now generate naturally underground.
  • Contain aquifers, bodies of water with different heights, independent of sea level (Y=63).
    • Aquifers below Y=0 sometimes generate with lava instead of water.[18]
  • Improved old caves to blend in with the new generations of caves better.[19]
  • New carver called crack carver, which appears as a fissure on the ground, like ravines but narrower and can go very deep.[20]
  • New noise caves, coming in 3 forms, "cheese", spaghetti" and "noodle".
    • The original caves still exist with their generation slightly tweaked to better blend in with noise caves.
    • 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 springs, aquifers and ores.
    • Spaghetti caves are long, thin caves that have small aquifers and are more similar to original caves.
    • Noodle caves are thinner, squigglier and more claustrophobic variants of spaghetti caves.
Ore veins


Deep Dark


Dimming of light[unofficial name]
  • While in the deep dark cave biome, the ambient lighting occasionally dims temporarily, limiting the player's visibility. This serves as a warning that the warden is nearby.[24]

Planned changes[]


  • Hostile mobs will only spawn in areas where the light level is equal 0.
    • This change only affects block-light and not sky-light.[25]

World generation[]

  • Likely change to the generation of alternate stone types, to make them appear in larger but less numerous deposits.[26]
    • Possibly seen in a screenshot tweeted by Henrik Kniberg,[27] in which diorite appears to generate in a long and flat horizontal strip, rather than a small unevenly shaped patch.
  • Ore generation has further rebalancing to add strategy to mining.
    • This is also largely through the addition of ore veins, which influence surrounding stone.

The new ore distribution compared to the old distribution.

  • The fossils in the deepest part of the underground generate with Deepslate Diamond Ore instead of Coal Ore.
  • Terrain generation is now independent from biomes, with biomes adapting to whatever terrain they happen to generate throughout.[28]
    • 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.


Dripstone Caves
  • Now generate naturally.
Lush Caves
  • Now generate naturally.
  • Axolotls will now spawn here
Deep Warm Ocean
  • Now generate naturally.


Sculk Sensor



Unconfirmed features[]

World generation[]

An example of how the other stones may generate

Other Stones
  • Diorite or calcite and what appears to be tuff spawn in layers of stone in straight lines instead of splotches.


Concept art showing how the spore blossom may open and close

Spore Blossom
  • Can close.
Azalea Log


Underground Cabin[unofficial name]


  • This is the first major update for Java Edition that is split into two updates since Adventure Update in 2011.
  • This is also the first major update that starts with "experimental" snapshots, instead of regular snapshots.


  1. The Warden does not attack other entities but it does follow the vibrations that they make.
  2. Height of the Warden is based from the image found on Twitter.


  1. "Minecraft: Caves & Cliffs Update FAQ" – Minecraft Help Center, April 17, 2021. "the first (1.17) this summer, and the second (1.18) around the holiday season"
  2. "I've seen some confusion around 1.17 and 1.18, thinking that it's weird that Part 2 is considered 1.18. As a general note, remember that versions are just a way to keep track of changes in a game, and Part 2 will be considered 1.18 because it is a major version change from 1.17."@kingbdogz on Twitter, April 25, 2021
  3. "A Caves & Cliffs announcement" – Minecraft.net, April 14, 2021
  4. "Minecraft Snapshot 21w15a" – Minecraft.net, April 14, 2021
  5. Caves & Cliffs Prototype Data Pack for Minecraft Java Edition
  6. a b c d "Caves, Cliffs & Other Updates: How We Make Minecraft - Episode 5"– Minecraft on YouTube, November 27, 2020
  7. "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 one letter changed of Skulk, meaning "keep out of sight, typically with a sinister or cowardly motive""@kingbdogz on Twitter, October 13, 2020
  8. "That is actually a bone-like material, not End Stone :)"@kingbdogz on Twitter, November 13, 2020
  9. "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
  10. "Feeling kinda short myself..."@kingbdogz on Twitter, October 6, 2020
  11. "Wardens will still be able to detect entities that are invisible :)"@kingbdogz on Twitter, October 26, 2020
  12. "3. Nope, but in the current design it will burn in sunlight."@kingbdogz on Twitter, May 21, 2021
  13. [https://twitter.com/kingbdogz/status/1405552938005708803 "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
  14. "They will not spawn like normal hostile mobs - not like anything that's in the game so far."@kingbdogz on Twitter, June 17, 2021
  15. "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
  16. "It absolutely has some tricks up its sleeves to counter that particular strategy :)"@kingbdogz on Twitter, October 26, 2020
  17. "Looking kinda short there, Iron Golem."@kingbdogz on Twitter, October 6, 2020
  18. "Minecraft Snapshot 21w16a" – Minecraft.net, April 21, 2021
  19. "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
  20. "There it is. The crack carver. Watch your step, they can go REALLY deep!"@henrikkniberg on Twitter, February 25, 2021
  21. [https://twitter.com/kingbdogz/status/1362097448416649222 "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
  22. "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
  23. "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
  24. "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
  25. "Some more information about: "Monsters will only spawn in complete darkness" * This means that generic monster spawning is now only in complete darkness. (Mobs that have special rules like slimes or phantoms are unaffected by this) * This only affects block-light, not sky-light"@_Ulraf_ on Twitter
  26. "Lol been prototyping that today actually! Thx for the pic though very useful."@henrikkniberg on Twitter, October 8, 2020
  27. "Sometimes weird things happen when messing around with world generation. The villagers up there look mighty confused :) #devbloopers"@henrikkniberg on Twitter, October 22, 2020
  28. "Minecraft 1.18 experimental snapshot"– Henrik Kniberg on YouTube, June 13, 2021
  29. "Minecraft Live 2020: Full Show @ 42:16"– October 3, 2020 on YouTube