; Lowering the floor further with such a high ceiling would make the cavern unstable.
: This message appears when the ceiling is too high above the floor.
; The cave walls echo strangely. There must be an open tunnel diagonal from the wall you are mining, and you would need to approach it from a different direction.
; There is no space to mine here. Clear the area first.
: This message appears when the tile occupied by the player has contains 100 a pile of items. Clear the area or move the character onto another tile and make a new pile of shards.
; You cannot have cave entrances meeting diagonally.