Lava Walls

Lava Walls are backing walls found in Cavern layer at depth where lava replaces water (but not in the Underworld). These naturally occurring walls can be destroyed with a Hammer, but will drop nothing. These walls do not stop enemies from spawning and cannot be used for proper housing. On the they can however be crafted from Hellstone, in which case they can be used like normal walls.

History
Mur de lave Лавовая стена 熔岩墙