Dungeon

Dungeon, as of 0.4.7

Cobblestone, Mossy Cobblestone, Cobblestone Stair
(or just Desert Stone)

The Dungeon is a technical biome.
Dungeons are hollow underground structures made of Cobblestone and Mossy Cobblestone. Many pathways and cobblestone Stairs connect a complex system of rooms. In 0.4.7, dungeons are not activated by default. “dungeons” has to be added to the variable mg_flags into the minetest.conf to cause the map generator to generate dungeons.
Currently in minetest dungeons are generated in the desert, too.

See also

Biomes

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