view of gopura iii and naga causeway at the 11th century preah vihear temple complex

11th ancient and angkor archeology architecture asia asian blocks border buddhist building cambodia causeway century complex courtyard dangrek gopura heritage hindu historic iii khmer landmark monument mountains naga outdoors path pavement prasat preah preserved province religion religious remote ruin sanctuary sandstone site sky spirituality stone structure temple thailand tropical unesco view vihea vihear walkway wall wat well world