Originally Posted by PvtIdaho
We visited one of the underground cities, but I can't recall the name at the moment. I think I watched a sunset from the top of the hill in your 5th picture.
Edit: the underground city was Kaymakli and I believe the hill in the picture is the "Uchisar Castle."
Yep, It is Uchisar Castle, and I went to Derinkuyu... It is the biggest underground city