Minecraft wiki entry for Dripstone_Caves, associated text: Dripstone caves generate commonly as an underground biome with dripstone blocks and pointed dripstone both hanging as stalactites and growing from the ground as stalagmites, small water wells of 1 × 1 blocks are generated in the ground. They mostly appear like regular caves, except with patches of dripstone blocks and pointed dripstone. Large dripstone clusters structures generate occasionally inside ravines. This biome also generates larger copper ore blobs compared to other biomes. Drowned are able to spawn in aquifers.