|faith=70
|favor=70
|difficulty=70(0)
|target=Tile
|castingtime=180
Changes open cave tiles to [[cave wall]]s or [[support beam|reinforce]]s existing cave walls. This spell cannot be cast if there is a player or item on the tile being collapsed, but it will not fail otherwise.
This spell always succeeds, even though it has a difficulty of 70.
This spell can be cast on mine entrances from the outside.