Minecraft Dungeons:Secret mission

Secret Locations are hidden levels that can be unlocked by obtaining maps that are usually found in level secrets. There are 6 secret levels currently and 3 DLC ones. They include:

Unlockable

 * Creepy Crypt
 * Arch Haven
 * Soggy Cave
 * Lower Temple
 * Underhalls
 * Panda Plateau (DLC)
 * Lost Settlement (DLC)
 * Colossal Rampart (DLC)
 * Soul Sand Valley (DLC)
 * Nether Fortress (DLC)
 * Crimson Forest   (DLC)
 * ???

Ancient Hunt Exclusive

 * Spider Cave
 * Woodland Mansion
 * Woodland Prison

Secret levels do not show up on the minimap until the level the secret level is unlocked from is cleared excluding ??? which only show up on the map when its scroll is collected.

Most of the secret levels are unlocked by finding scrolls in secret areas in the main levels. Other than Panda Plateau (from Dingy Jungle) (Jungle Awakens DLC), Lost Settlement (from Frosted Fjord) (Creeping Winter DLC) and Colossal Rampart (from Windswept Peaks) (Howling Peaks DLC) which have a chance of the secret area generating, all levels have a 100% chance for the scroll to generate.

The ??? level is unlocked differently. After entering the church area at camp (which can be accessed after completing Obsidian Pinnacle on default), players can access the rune rooms in each main non-DLC level. After obtaining all the runes found in each rune room and placing them at the church area at camp, a room is revealed where the "???" can be unlocked along with 2 obsidian chests.

There are also a set of secret locations that can only be found during Ancient Hunts. These levels cannot be unlocked by any means, unless hacks are used.

Gallery
es:MCD:Ubicaciones secretas