evidence: The Preah Vihear monument in Cambodia is located near to the border with Thailand (it is called Khao Phra Wihan in Thailand), on the southern margin of the Khorat Plateau (Fig. 1) [1,2,3] and consists of masonry buildings constructed from sandstone blocks. The monument was occupied by Khmer Rouge since 1989 and released in 1998. The maintenance of the monument was conducted by the Cambodian Government during 2000–2002. The monument was designated as a UNESCO World Cultural Heritage Site in 2008.