I know that you can smooth stone walls:

smoothed stone

But my fortress is in a clay/dirt layer, and i would like to smooth the walls

1 Answer 1


You can't. Clay and dirt can't be improved at all, except by digging them out and building stone block walls in their place. For this reason, clay/dirt layers should generally be reserved for underground farms (since they don't require irrigation), and the real fortress should be built below them, in true dwarfish stone.

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