Deep Dark biome

The deep dark generates deep underground beneath mountainous terrain. It has no natural mob spawns, but sculk shriekers summon the warden — and it is the only biome containing ancient cities.

Biome facts

Identifier
minecraft:deep_dark
Dimension
Overworld
Category
cave
Climate
temperate
Available since
Minecraft 1.19

What generates in a deep dark

  • Sculk blocks
  • Sculk sensors and shriekers
  • The warden

Structures in this biome

The following structures can generate in deep dark:

  • Ancient City — Ancient cities generate deep underground in the deep dark, around Y -52, and are the only source of the swift sneak enchantment.

Finding a deep dark in your world

Biome placement depends on the world seed and the Minecraft version. Open your seed on the seed map, then pan around: biome shading shows where each biome sits, and structure layers show what generates inside it.

Note that biome rendering requires the WebAssembly generation engine described in the seed map documentation. Structure candidate positions, chunk geometry and slime chunks are computed exactly without it.