Terrain:Reinforced cave wall
A reinforced cave wall is a cave wall that has been propped up with a support beam, designed to drastically reduce collapse chance. Ore veins are automatically considered reinforced for collapse chance purposes.
All walls around a tile need to be reinforced to help protect against collapsing.
Attempting to mine a reinforced tile outside of a deed gives the error message 'The rock is too hard to mine'.
The disintegrate spell can be used to remove reinforced cave walls; under certain conditions.