The terrain
is generally flat conditions The northern and eastern mountain. Area Phli district and Ban Na Muang. Additionally, some of the In Khao Yai National Park just as the boundaries of Prachin Buri and Nakhon Nayok three provinces, with the mountains in contact with Dong Phaya Yen mountains with peaks of about 1,292 meters in the central and southern plains. The area is sandy soil suitable for farming. In the Phli district Guard District