UNDERGROUND BIOMES
Cave biomes found deep beneath the surface with unique ecosystems. 5 biomes in this category.
What makes a biome underground
Five biomes make up one of the smallest groups on this site: Lush Caves, Dripstone Caves, Deep Dark, Pale Garden and Sulfur Caves. It is also the youngest group by a distance, because all five arrived in 1.18 or later, Pale Garden in 1.21.4 and Sulfur Caves only in 26.2, and each of those two was the most recent biome anywhere on this site when it came.
Nine mobs spawn in these five and in no other group, which is more exclusive mobs than any other climate holds: the axolotl and the glow squid in the water of Lush Caves, the zombie, spider and creeper in the dark of Dripstone Caves, the warden in Deep Dark, the creaking in Pale Garden, and the sulfur cube and the cave spider in Sulfur Caves. One structure older than 26.3 generates in the group, the Ancient City, and it sits in Deep Dark alone.
All 5 underground biomes
A beautiful underground biome. Axolotls spawn exclusively here. Azalea trees on the surface indicate lush caves below. Glow berries provide natural light.
Features pointed dripstone formations. Stalactites can drip water to fill cauldrons. Pointed dripstone deals extra fall damage. Large ore veins can generate here.
The most dangerous underground biome. Home to the Warden, which is attracted by vibrations and can deal massive damage. Ancient Cities contain unique loot including echo shards and disc fragments.
A pale, eerie biome featuring ghostly pale oak trees and hanging moss. The Creaking mob spawns here, animated by Creaking Heart blocks hidden in trees. Part of the Pale Garden update.
An underground biome from the Chaos Cubed drop. The caves are banded with sulfur and cinnabar, and pools of water hide potent sulfur that sends up bubbles and, over lava or magma, geysers. The sulfur cube spawns here more often than any other monster, and the biome has its own music.
Mobs across these 5 biomes
Twelve mobs live in the five underground biomes and nine of them are found nowhere else on this site, the highest count of exclusive mobs of any group. Dripstone Caves holds the most with five.
- Axolotlonly in this groupin Lush Caves
- Cave Spideronly in this groupin Sulfur Caves
- Creakingonly in this groupin Pale Garden
- Creeperonly in this groupin Dripstone Caves
- Drownedin Dripstone Caves
- Glow Squidonly in this groupin Lush Caves
- Skeletonin Dripstone Caves
- Spideronly in this groupin Dripstone Caves
- Sulfur Cubeonly in this groupin Sulfur Caves
- Tropical Fishin Lush Caves
- Wardenonly in this groupin Deep Dark
- Zombieonly in this groupin Dripstone Caves
Structures in the underground biomes
One structure older than 26.3 generates in the whole group, the Ancient City, and it sits in Deep Dark alone; the Abandoned Camp of 26.3 reaches Pale Garden.
- Abandoned Campin Pale Garden
- Ancient Cityonly in this groupin Deep Dark
How the 5 compare
- Coldest at temperature 0.5
- Lush Caves
- Warmest at temperature 0.8
- Dripstone Caves, Deep Dark and Sulfur Caves
- Most mobs, 5 of them
- Dripstone Caves
- Rarest, counted as rare
- Deep Dark and Pale Garden
- Longest in the game, since 1.18
- Lush Caves
- Newest, added in 26.2
- Sulfur Caves; before 26.2 it was Pale Garden, added in 1.21.4
Deep Dark and Pale Garden are both rare and the other three are uncommon, so this is the only group on the site without a single common biome. Dripstone Caves has the longest spawn list of the five with five mobs.
Twenty six blocks across only five biomes, most of them sculk, moss, dripstone or sulfur rather than plain stone.