Underground Hallow

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The Underground Hallow is a Hardmode Biome, being one of the biomes that spawns when the Wall of Flesh is defeated. It is the underground version of the surface-level Hallow, and appears at and below the cavern layer. It operates similarly to surface Hallow, being comprised of Pearlstone and Pearlsand; though it spawns different enemies, along with Crystal Shards, a common Hardmode crafting material. Underground Hallow spreads just like surface Hallow, and similarly can not spread to Corruption (nor to Underground Corruption).

Underground Hallow does not suppress the spawn of other underground and cavern enemies.

All enemies killed in the Underground Hallow have a chance to drop a Soul of Light.

Note: Most characteristics of surface Hallow apply to the Underground Hallow, with the exception of the enemies that spawn. See The Hallow for more extensive information.


Underground Hallow
Characters Unique Drops
Illuminant Slime.png Illuminant Slime
Illuminant Bat.png Illuminant Bat
Chaos Elemental.png Chaos Elemental
Spectral Elemental.png Spectral Elemental
Console only.pngMobile only.png
Enchanted Sword (NPC).png Enchanted Sword

From Chaos Elemental:

Rod of Discord.png Rod of Discord
Chaos Elemental Banner.png Chaos Elemental

From Spectral Elemental:

Spectral Elemental Banner.png Spectral
Elemental Banner

From Enchanted Sword:

Nazar.png Nazar
Enchanted Sword Banner.png Enchanted
Sword Banner

From any enemy:

Hallowed Key Mold.png Hallowed Key Mold
(1/2500 chance)
Soul of Light.png Soul of Light
(1/5 chance)

From terrain:

Pearlstone Block.png Pearlstone Block
Pearlsand Block.png Pearlsand Block
Crystal Shard.png Crystal Shard

From Fishing:

Chaos Fish.png Chaos Fish
Princess Fish.png Princess Fish
Prismite.png Prismite


  • 1.2.3: Added biome specific stalactite variations.
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