A 12km valley, one of the favorite retreats of the Byzantine monks, left a colorfully painted cave church, with more than 5,000 cave ruins and 105 cave churches. Although not as spectacular as the famous Grand Canyon, it still has a lot of charm, and it is very comfortable to walk in, especially in the dusty places of Kappa, streams, birds and lush vegetation. It is rare. After the strength is not big, it is light walking [smirking] but still some people are tired.