; The cave walls look very unstable. You cannot keep mining here. : Occurs inside a mine. Exact cause unknown, it happens when mining close to the top of the rock layer, and can sometimes be avoided by mining downwards.
; You hear falling rocks on the other side of the wall. A deep shaft will probably emerge. : Occurs inside a mine. Caused when there is already another mine nearby, but there is too much of a height difference to connect the two mines.
Other: "; Dirt will flow in" has not been seen lately, it may have been replaced by ". : The cave walls look very unstable"tile you are mining on will break out to the surface. ; There's also a message for attempting to mine underwater, text unknown.
; There is no space to mine here. Please clear the area before continuing. : Occurs when the tile you're standing on has 100 items on. Move a few objects and you can continue.