Originally posted by jonnin:

moving from stone to marble is another story. Not only do you have to replace each block, but the blocks are not 1-to-1 replacements in most cases. This is a heroic effort, and basically either do-over or stone by stone it slowly.

I'm just slapping some marble on top or in front of stone. Nothing wrong with the good old-fashioned rock walls, and marble only adds some depth feature to them. Same thing with iron cages.

https://steamcommunity.com/sharedfiles/filedetails/?id=2931228522