Khao Klang Nok is situated on Ban Sra Prue, approximately 2 kilometers further north of Si Thep ancient town.
At present, it is a large laterite base, measuring about 64 meters in width and length, and 20 meters in height, on the laterite base is a brick stupa. In the middle of the structure is a looter’s pit.
The style of architecture and decoration suggest that Khao Klang Nok Monument was constructed under the influence of Dvaravati Buddhism. This monument was constructed around the 8th – 9th century A.D.