Rock tile
Description
A rock tile is a tile of rock on the ground.
On rock tiles you can prospect for ore, create cave entrances, and terraform it.
Rock tile terraforming with a pickaxe works in the same way as digging dirt. Stand on the corner you want to lower, activate a pickaxe, right-click a rock tile, and select Mining (Note: If you are surfacing you need the four blocks around the tile you are surfacing from to be Rock as well.). Every few actions you lower the corner by 1 dirt.
You can not raise a rock tile, but you can raise the corner by dropping dirt or sand on it.