In 1983, some 310 square kilometers of land in the districts of Thong Pha Phum and Sangkha Buri. Kanchanaburi Province will be inundated to form part of the reservoir of the Khao Laem Kam of Thailand which is currently under construction. This includes forested and mountainous areas known to shelter archaeological monuments and artifacts useful in tracing the history of the country. To salvage them, thus preventing their loss to the archaeological world, the Department of Fine Arts launched ""The Project to Rescue Archaeological Sites of the Khwae Noi River"" in March 1981.
