Every cave has its own mood: its own light, its own particles in the water, its own sound. Inside a cave your HUD shows the cave’s name instead of the biome. The small map on each card marks the entrances.
Coral Grottoes
Grottoes under the coral platforms of the shallows. A good place for your first trip into a cave.
Blue Hole
A bell-shaped chamber under four sheer shafts.
Jade Undercrofts
Vaults beneath the jade plateau of the Veil Canyons.
- Biome
- Veil Canyons
- Depth
- 176–223 m
- Chambers
- 53
- Entrances on the map
- 6
Tableland Tunnels
Passages that run right through the table rocks.
- Biome
- Tablelands
- Depth
- 301–686 m
- Chambers
- 70
- Entrances on the map
- 3
Bloom Hollow
A chamber of glowing mushrooms inside a limestone dome.
Fault Caves
Cave mouths on the ledges of the ring walls between the tiers. This is the largest system: it runs through almost the whole depth of the caldera.
- Biome
- the walls between tiers
- Depth
- 289–1,049 m
- Chambers
- 138
- Entrances on the map
- 25
Crystal Geodes
Hollows studded with crystals.
Lava Tubes
Tunnels with lava on the floor, at the very bottom of the caldera. The deepest cave system of all.
- Biome
- Ember Flats, Sulfur Graveyard
- Depth
- 979–1,402 m
- Chambers
- 162
- Entrances on the map
- 7
Graveyard Caverns
Pillared halls under the Sulfur Graveyard.
- Biome
- Sulfur Graveyard
- Depth
- 1,244–1,394 m
- Chambers
- 10
- Entrances on the map
- 2



