Kaeng Krachan is located on the eastern slope of the Tenasserim Mountain Range at the border of Burma (Myanmar). It occupies the western half of Phetchaburi Province (Amphur Kaeng Krachan and Amphur Nong Ya Plong) and a portion of northern Prachuab Khiri Khan Province (Amphur Hua Hin). The National Park was designated on June 12, 1981; its original borders encompassed 1.5 million rai. On April 20, 1983, Thalerng Thamrongnawasawad, Peramnent Secretary of the Ministry of Agriculture and Cooperatives, presided over the offical opening ceremony. On December 27, 1984, the park area was extended, as proposed by the Hua Hin Environmental Conservation Group, to cover the boundary between Phetchaburi and Prachuab Khirikhan Provinces, bringing the total area to over 1.8 million rai.
 
          The area, about 45 squares kilometers, consists of both ground and water in reservoir. The vastly forest upper the Kang Kra Jan Dam is on complicated mountain ranges which the highest peak is 1,200 meters above sea level and approximately high 500 meter above sea level. Most of the mountains are Granite Mountain, few are Limestone Mountains, and many are full of fluoride. And also most of the area is covered by rain forest so that is the source of Phet Buri River and Pran Buri River. "Baan Maka Chalet" have location  next to Kaeng Krachan National Park