mountain ring near kislovodsk, tourist attraction in stavropol krai, russia. landscape of sandy rock in summer, scenery of caves

kislovodsk mountain stavropol cave rock landscape ring nature sky summer arch attraction blue caucasian caucasus cliff destination europe formation hike hole koltso krai landmark mineral mount national outdoor park place resort russia russian sand scenery scenic scene shape sightseeing stone territory tourism tourist travel vacation view wall water window russia sandy caves sky theme