Ecto Mist

Ecto Mist is produced by the Graveyard Mini-Biome. It is translucent, and has a vague similarity to the clouds on the world generation screen, the difference being it floats along the ground. The mist will appear on top of solid blocks in an unknown radius. Occasional wisps will appear in the air. It can be used to craft previously world-gen exclusive items such as Cave Dirt Wall.