: Activate a pickaxe and '''right click''' the cave tile, select '''Mining''' > '''Mine'''.
* It is possible to mine up, down or flat but only the final action is taken into account. The resulting slope of up or down will be approximately 20.
* There are slight deviations in mine slopes (up to 3 "dirtSlope") when a mine shaft progresses.This is based off Mining Skill.{{Spoiler|
skill less than 50, +-3
skill = 50, variance is +-2
skill = 70, variance is +-1
skill = 90+ no variance
}}
* When connecting two mine shafts, the direction of the mining is irrelevant; one floor will connect to the other floor and ceilings will likewise connect.
* Each action will produce one rock shard.