ancient carved cross stones (khachkars) covered with lichen near hayravank monastery, armenia

fortification khachkars hayravank monastery building landmark ancient covered armenia located carved stones lichen castle temple chapel cross sevan ruins tower house bank lake wall rock tree art ancient armenia khachkar cross hayravank armenian stone old religion history medieval lake monastery travel famous carved sevan mountain popular trip christianity landmark religious building culture holy tourism monument historical landscape christian church architecture nature orthodox rock temple attraction view heritage chapel sacred caucasus hill carving mediaeval shore wall lakeshore