hor nang usa tower. the ancient rock building from prehistoric period at phu phra bat historic park

adventure aged ancient antique archaeological ban bat big boulder buddhism building dvaravati formation from geological heap heritage highland historic historical history holy hor huge landscape made man massive nang natural nature old outdoor overlap park period phra phu phue pile place prehistoric religious remains rock ruin sacred shrine site spire stone strange talus temple thailand thani tourism tower udon unusual usa