Moon city

Update: New, better version of this available here: https://www.myminifactory.com/object/moon-city-2-0-52920   A city inside a ruined moon. Based on a drawing I've seen around, but couldn't figure out the original artist...found many derivatives only. Anyway, I was looking for inspiration and when I saw the drawing I immediately wanted to try creating it in 3D, and this is the result. This is a very long print at default scale, which was pretty much necessary for me to print some of the deta