Elevations range between 206 and 579 m. The highest mountain is Khao Pran Nut (ยอดเขาพรานนุช).[3] There are also some ancient Khmer temple ruins in the park area such as Prasat Khao Lon.
Between the 1970s and the 1990s there were refugee camps for Cambodians in this part of the border zone.
Climate
The weather usually influenced by southwestern monsoon and northeastern monsoon. In the southwestern monsoon from May to October, there are high humidity winds blowing from the Andaman Sea and the Gulf of Thailand causing rain, about 1–1.4 m (3 ft 3 in – 4 ft 7 in) per year. The weather consists of three seasons: summer from February to April; rain from May to October; winter from November to January. Average temperature is 39.8 °C (103.6 °F) and the lowest temperature is 14.3 °C (57.7 °F).[4]
Ta Phraya is also home to the endangered Siamese rosewood, a tree species that is being extracted illegally for sale in especially the Chinese furniture market. Armed poachers are coming across the border from Cambodia, and rangers are since 2015 trained in military style counter-poaching measures [5]