Here is a bit more information on this phenomenon.  It is surprising how rarely this amazing place is discussed outside of the archaeological community:

The stunning landscape of Cappadocia and thousands years of cultural heritage make it one of the most impressive places on our planet. Cappadocia is listed in UNESCO World Heritage sites as “Göreme National Park and the Rock Sites of Cappadocia”: “In a spectacular landscape, entirely sculpted by erosion, the Göreme valley and its surroundings contain rock-hewn sanctuaries that provide unique evidence of Byzantine art in the post-Iconoclastic period. Dwellings, troglodyte villages and underground towns – the remains of a traditional human habitat dating back to the 4th century – can also be seen there.”

Wow who knew!  We hope you like the video.