Calamity Mod Wiki

The Cavern layer features thirteen new enemies, including two minibosses, as well as a shrine structure which contains an Onyx Excavator Key. Several new ores spawn in this layer after certain bosses have been defeated.

In Death Mode, the Underground, Cavern, and Underworld layers become darker the deeper the player gets. This can be mitigated with light-generating equipment.


CharactersUnique TreasuresUnique Drops
Diamond CrawlerDiamond Crawler
Emerald CrawlerEmerald Crawler
Ruby CrawlerRuby Crawler
Cosmic ElementalCosmic Elemental

After defeating The Hive Mind/The Perforators:

Aero SlimeAero Slime

In Hardmode:

Overloaded SoldierOverloaded Soldier
Sun BatSun Bat
Phantom DebrisPhantom Debris
Earth ElementalEarth Elemental(Miniboss)

After defeating Cryogen:

Cryo SlimeCryo Slime

After defeating Plantera:

Armored DiggerArmored Digger(Miniboss)
Perennial SlimePerennial Slime

After defeating Providence, the Profaned Goddess:

Bloom SlimeBloom Slime
From Shrines:
Onyx Excavator KeyOnyx Excavator Key
From Diamond Crawlers:

From Emerald Crawlers:


From Ruby Crawlers:


From Cosmic Elementals:

Bone SwordBone Sword
Enchanted SwordEnchanted Sword

From Diamond Crawlers, Emerald Crawlers,
and Ruby Crawlers:

Scuttler's JewelScuttler's Jewel

From Phantom Debris, Skeletons, Hoplites,
Overloaded Soldiers, and Armored Skeletons:

Ancient Bone DustAncient Bone Dust

From Skeletons, Hoplites, Skeleton Archers,
and Armored Skeletons in Pre-Hardmode:


From Blue Jellyfishes:

Mana JellyMana Jelly

From Green Jellyfishes:

Vital JellyVital Jelly

From Crawdads:

Craw CarapaceCraw Carapace

From Giant Shellies:

Giant ShellGiant Shell

From Tim:

Plasma RodPlasma Rod
From Aero Slimes:
Aerialite OreAerialite Ore

From Cryo Slimes:

Cryonic OreCryonic Ore

From Perennial Slimes:

Perennial OrePerennial Ore

From Bloom Slimes:

Uelibloom OreUelibloom Ore

From Sun Bats:

Essence of SunlightEssence of Sunlight

From Armored Diggers:

Draedon's RemoteDraedon's Remote
Demonic Bone AshDemonic Bone Ash

From Phantom Debris and Overloaded Soldiers
after defeating Providence:


From Earth Elementals:

Earthen PikeEarthen Pike
Slag MagnumSlag Magnum
Arid ArtifactArid Artifact
From terrain:

After defeating The Hive Mind/The Perforators:

Aerialite OreAerialite Ore

After defeating Plantera:

Perennial OrePerennial Ore

After defeating Providence:

Uelibloom OreUelibloom Ore

After defeating Jungle Dragon, Yharon:

Auric OreAuric Ore

From Fishing:

Glimmering GemfishGlimmering Gemfish

See Also