old clifftop monastery of simon peter greece mount athos

aegean athos background bay chalkidiki coast destination greece greek holy monasteries monastic mount mountain mountainous nature orthodox peninsula religious sailing scenery sea shore tours travel traveling trip woods water surface forests woody green skyline summer historical christianity europe eastern beach coastline coastal panorama scenic view secluded solitary ruins country ridge nea thivaida skete old ancient history religion christian rocky faith devotion monastery exterior building architecture landmarks clifftop sheer cliff solitude seclusion peak sky halkidiki fortress monks cloister spiritual simon peter