Beautify Cave Wall
Bottom: beautified.
Beautify Cave Wall is a command players can use to have citizens redesign the edges of cave walls that were previously dug out. When cave walls are dug out, the walls will have a rugged, rough look to them, but once they are beautified with the command, the walls appear much smoother and more aesthetically pleasing to both the eyes of the player, as well as the citizen who see it.
In-game description
"Polishes cave walls and makes them more appealing to your subjects."