Deep Dark

The deep dark is a cave biome that generates deep underground in the Overworld.

Description
The deep dark is an Overworld biome that generates deep underground in areas with low erosion. The biome is dimly lit; there is almost no glow lichen, with the only natural light sources being sculk catalysts and lava.

This biome is often covered in large patches of sculk blocks surrounded by sculk veins, which include sculk-related blocks such as sculk shriekers, sculk sensors and sculk catalysts. No mobs spawn in this biome, but if a player triggers a sculk shrieker a certain amount of times, the warden may appear, giving the player the Darkness effect.

This is the only biome where ancient cities can generate. Likewise, no other structure other than dungeons and strongholds can generate here.

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