Quarry stair cases disappear
Quarry stair cases still disappear
Screenshot 5-15-2018 73655 PM.png
Sorry for the inconvenience, I look into your save game, thanks for sharing it, and I found that you made two quarry beside each other and stairs needs the support of the wall, so if you destroy that wall in another quarry it will make the stairs to fall.
Hope it helps!
Thanks for your support!
edited May 2018
Thanks I completely forgot about that one detail.