Communication across the central ranges is difficult. The southern portion of the Annamese Cordillera has two identifiable regions. One consists of plateaus of approximately 1,700 feet (520 metres) in elevation that have experienced little erosion, as in the Dac Lac Plateau near Buon Me Thuot. The second region is characterized by heavily eroded plateaus: in the vicinity of Pleiku, the Kontum Plateau is about 2,500 feet (760 metres) above sea level; and in the Da Lat area, the Di Linh Plateau is about 4,900 feet (1,500 metres).