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
Mother Slime.png
Baby Slime.png
Giant Worm.png
Skeleton.png
Cave Bat.png
Salamander.png
Crawdad.png
Giant Shelly.png
Undead Miner.png
Undead Miner 
(uncommon)
Vampire Miner.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
Piranha.png

In Spider Nests:

Wall Creeper.png

In Hardmode:

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

In Water in Hardmode:

Angler Fish.png
Green Jellyfish.png

In Spider Nests
in Hardmode:

Black Recluse.png

Traps:

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

From Giant Worms
and Diggers:

Whoopie Cushion.png

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

From Tim:

Wizard Hat.png
Wizard Hat 
(always)

From Nymph:

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

From Cochineal Beetle:

Red Husk.png
Red Husk Desktop VersionConsole VersionMobile only.png

From Skeleton:

Ancient Iron Helmet.png
Ancient Gold Helmet.png
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)
25px(extremely rare)

From Fishing:

Scaly Truffle.png
Scaly Truffle
 Desktop VersionConsole VersionMobile only.png
(specific conditions)
  1. Spawns from Mother Slimes

History[edit | edit source]

  • 1.2.2: New "Alternate Underground" soundtrack.
  • 1.1: Random traps added.
Biomes and Structures
 
Surface Layers Forest • Desert • Ocean • Snow • Jungle • Mushroom • Evil Biome (The Corruption • The Crimson) • The Hallow • Space
Underground Layers Underground • Cavern • Underground Snow • Underground DesertDesktop Version • Underground Jungle • Underground Mushroom • Underground Corruption • Underground Crimson • Underground Hallow • The Underworld
Special Biomes Meteorite • Granite CaveDesktop Version • Marble CaveDesktop Version • Spider Nest • Bee Hive • Dungeon • Lihzahrd Temple
Structures and Other Biomes Living Tree • Enchanted Sword ShrineDesktop Version • Floating Island • Underground Cabin • Chasm • Pyramid • Jungle Shrine • Living Mahogany TreeDesktop Version • Jungle SanctumMobile only.png • Ruined House • Heart ShrineMobile only.png