Ice biome



The Underground Snow biome is the underground version of the Snow biome, beginning at the Cavern layer, and stopping at the lava layer. It is composed mainly of Snow Blocks and Ice Blocks. Thin Ice is generated over water and breaks when a character falls over 4 tiles onto it (unless using the Ice Skates or another accessory crafted from them). Underground Snow is the only place where Ice Chests can be found.

During Hardmode, the corruption/crimson/hallow can spread through it, generating purple/red/pink ice, respectively. They are unable to spread through snow blocks.