The average elevation is 1,980 metres (6,500 ft). The mountains are highest in the north where they reach more than 5,000 m (16,000 ft); in the south they rise no higher than 3,000 m (9,800 ft). The highest point in the north is the Kawagebo Peak in Deqin County on the Diqing Plateau, which is about 6,740 m (22,110 ft); and the lowest is in the Red River Valley in Hekou County, near the Vietnamese border, with an elevation of 76.4 m (251 ft).