The highest elevation is 2,183 m (7,162 ft) Gunung Korbu. On the Thai side the highest point is 1,533 m Ulu Titi Basah (ยูลูติติ บาซาห์), at the Thai/Malaysian border between Yala Province and Perak. In the southern foothills, the highest is 1,276 m Mount Ophir.