part of the si thep historical park, khao klang nok is scheduled to become a unesco world heritage site in september 2023. this

khao klung nong phetchab phetchaburn klang nok ancient landscape travel historical religion religious heritage art buddhism ruin sculpture statue temple old sky thai wat architecture asia asian building culture landmark park stone faith pray prayer pyramid spiritual great historic rock thailand attraction blue buddha buddhist pagoda stupa background unesco thep scheduled world site september 2023 dates back dvaravati era located thailand#39aph39#s phetchabun province