This first picture was taken at Goreme National Park in Cappadocia, Turkey. This region in central Turkey is known for its mountains that have been used for centuries as dwellings. One of the largest underground cities in the world, Derinkuku, is located here. Photo 2 shows a section of the underground city. Photo 3 shows an underground church. It was used by early Christians, among other people, to hide from Roman, Arab and Mongolian armies moving through the region.
Air balloons are now used by tourists to get a beautiful view of the mountains and valleys that define the region.