PrasatPhanom Rung is one of the most significant ancient monuments of Thailand. Located on the top of phanom Rung hill near Ta-Pek village of Chalermphrakiet district (previously call Nangrong), Buriram province. Phanom Rung hill is one of the ancient inactive volcanoes in the lower Northeastern region. The hill rises over 383 meters above sea level .The name “Phanom Rung” which presently refers to birth the hill and the monastery was an ancient name appearing on four stone inscriptions found in the area. The stele inscribed in the Khmer language with ancient khmer characters date to the 11th century HRH Princess MAHA CHAKRI SIRINDHORN has studied and translated the inscriptions stone of Phanom Rung and given meaning of Phanom Rung (a khmer name) as “broad mountain”The quest for the builder of Prasat Phnom Rung leads to a study of the inscriptions stone found in the area. One inscription stone mentions the name Narendraditya,