mountain ring in kislovodsk, stavropol krai, russia. landscape of hole rock, koltso in russian and sky in summer, scenery of

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