Hello, sorry for my bad English and wrong use of words:-)
How can I make a corridor in a mountain? I have a high mountain, and it is a mine in the medieval. People can go in the mine, but how can I make that? I mean this:
http://www.wildschoenau.com/client/wildschoenau/media/550x/Media_1750124178.jpg
Thank you very much!
Jordy