pile of the brick uppermost terrace of stupa on the square base of khao klang nok, influence of draravati culture, 8th-9th century

8th9th ancient archaeological architecture asia asian attraction background base brick buddhism buddhist building century culture destination draravati famous green heritage historic historical history holy influence khao klang landmark landscape left main monument nature nok old pagoda period petchaboon pile religion ruin site sky square stone stupa temple terrace thailand tourism tower travel uppermost wall wat