Cavern

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BiomeBannerCavern.png
The change of background that marks the beginning of the Cavern layer.

The Cavern layer is the largest layer, beginning just below the Underground and extending all the way down until the Underworld layer. It is characterized by darker stone background tiles. Stone is the predominant block in this layer (as opposed to Dirt in the Underground). Caverns contain occasional Underground Cabins where valuables can be found, as well as Mushroom Biomes, dangerous traps, rare and dangerous Spider Nest mini-biomes, and much more.

Lava begins to appear around -2100ft in small pools, which gradually become lava wells at around the -3000ft mark.

Map Size Min Start Depth Average Start Depth Max Start Depth
Small 120 ft 480 ft 840 ft
Medium 180 ft 720 ft 1260 ft
Large 240 ft 960 ft 1680 ft

Contents[edit | edit source]

Map view highlighting the Cavern layer range
Cavern
Characters Unique Drops
Black Slime.png Black Slime
Mother Slime.png Mother Slime
Baby Slime.png Baby Slime
[1]
Giant Worm.png Giant Worm
Skeleton.png Skeleton
Cave Bat.png Cave Bat
Salamander.png Salamander
Pc only.png
Crawdad.png Crawdad
Pc only.png
Giant Shelly.png Giant Shelly
Pc only.png
Undead Miner.png Undead Miner
(uncommon)
Vampire Miner.png Vampire Miner
Console only.png Mobile only.png
Tim.png Tim
(rare)
Nymph.png Nymph
(rare)
Pinky.png Pinky
(rare)
Cochineal Beetle.png Cochineal Beetle
(uncommon)
Mouse.png Mouse

In Water:

Blue Jellyfish.png Blue Jellyfish
Piranha.png Piranha

In Spider Nests:

Wall Creeper.png Wall Creeper

In Hardmode:

Digger Head.png Digger
Giant Bat.png Giant Bat
Armored Skeleton.png Armored Skeleton
Skeleton Archer.png Skeleton Archer
Rune Wizard.png Rune Wizard
(rare)
Ghost (enemy).png Ghost (enemy)
during Halloween

In Water in Hardmode:

Angler Fish.png Angler Fish
Green Jellyfish.png Green Jellyfish

In Spider Nests
in Hardmode:

Black Recluse.png Black Recluse

Traps:

Dart Trap.png Dart Trap
Boulder.png Boulder
Explosives.png Explosives
(rare)

From Giant Worms
and Diggers:

Whoopie Cushion.png Whoopie Cushion
(rare)

From Cave Bat:

Chain Knife.png Chain Knife
(uncommon)
Depth Meter.png Depth Meter
(uncommon)

From Vampire Miner
and Undead Miner:

Mining Shirt.png Mining Shirt
(uncommon)
Mining Pants.png Mining Pants
(uncommon)

From Undead Miner:

Bone Pickaxe.png Bone Pickaxe
(rare)

From Vampire Miner:

Vial of Blood.png Vial of Blood
Console only.png Mobile only.png

From Tim:

Wizard Hat.png Wizard Hat
(always)

From Nymph:

Metal Detector.png Metal Detector
50% / 100% chance

From Cochineal Beetle:

Red Husk.png Red Husk

From Skeleton:

Ancient Iron Helmet.png Ancient Iron Helmet
(rare)
Ancient Gold Helmet.png Ancient Gold Helmet
(rare)
Bone Sword.png Bone Sword
(rare)
Skull.png Skull
(very rare)

From Armored Skeleton:

Beam Sword.png Beam Sword
(rare)

From Skeleton Archer:

Magic Quiver.png Magic Quiver
(uncommon)
Marrow.png Marrow
(uncommon)

From Rune Wizard:

Rune Hat.png Rune Hat
(always)
Rune Robe.png Rune Robe
(always)

From terrain:

Enchanted Sword (item).png Enchanted Sword
(extremely rare)
Arkhalis.png Arkhalis
Pc only.png (extremely rare)

From Fishing:

Scaly Truffle.png Scaly Truffle
(specific conditions)
  1. Spawns from Mother Slimes

History[edit | edit source]

Biomes
 
Surface Layers Forest • Desert • Ocean • Snow • Jungle • Mushroom • The Corruption • The Crimson • The Hallow • Space
Underground Layers Underground • Cavern • Underground Snow • Pc only.png Underground Desert • Underground Jungle • Underground Mushroom • Underground Corruption • Underground Crimson • Underground Hallow • The Underworld
Special Biomes Meteorite • Pc only.png Granite Cave • Pc only.png Marble Cave • Spider Nest • Bee Hive • Dungeon • Lihzahrd Temple
Other Living Tree • Pc only.png Enchanted Sword Shrine • Floating Island • Underground Cabin • Chasm • Pyramid • Jungle Shrine • Pc only.png Living Mahogany Tree • Mobile only.png Jungle Sanctum • Ruined House