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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 down until the Underworld layer. Darker stone background tiles characterize it. 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 Glowing Mushroom biomes, dangerous traps, rare and dangerous Spider Cave mini-biomes, and much more.

After defeating at least one Goblin Invasion, the Goblin Tinkerer NPC can be found in this layer. The Wizard NPC can also be found in this layer at any time during Hardmode.

In large worlds, 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
Unique Treasures
Unique Drops
From Giant Bat:
From Cave Bat:
From Tim:
From Nymph:
From terrain:
  1. Spawns from Mother Slimes

NPC happiness Desktop version[edit | edit source]

UndergroundUnderground / CavernCavern / The UnderworldThe Underworld
Loved byn/a
Disliked by
Hated byn/a

For more information, see NPC happiness.

Gallery[edit | edit source]

Backgrounds[edit | edit source]

This content is transcluded from Biome backgrounds § Cavern.

Pre-underworld[edit | edit source]

History[edit | edit source]