Göreme is a district of the Nevşehir Province in Turkey. After the eruption of Mount Erciyes about 2,000 years ago, ash and lava formed soft rocks in the Cappadocia Region, covering a region of about 20,000 km². The softer rock was eroded by wind and water, leaving the hard cap rock on top of pillars, forming the present-day fairy chimneys. People of Göreme, at the heart of the Cappadocia Region, realized that these soft rocks could be easily carved out to form houses, churches, monasteries. These Christian sanctuaries contain many examples of Byzantine art from the post-iconoclastic period.