Libya forms part of the North African plateau extending from the Atlantic Ocean to the Red Sea. The highest point is Bikku Bitti, or Bette Peak, a 2,267-m (7,438-ft) peak in the extreme south. The chief geographical areas are Tripolitania, Cyrenaica, the Sirte Desert, and Fezzan. Tripolitania, in the northwest, consists of a series of terraces rising slowly from sea level along the coastal plain of Al-Jifara to a sharp escarpment. At the top of this escarpment is an upland plateau of sand, scrub, and scattered masses of stone, with elevations of up to 1,000 m (3,300 ft). Farther south are depressions extending from east to west. Here are found many oases and artesian wells.
The Sirte Desert is a barren area along the Gulf of Sidra separating Tripolitania and Cyrenaica. An upland plateau rising to about 600 m (2,000 ft) gives a rugged coastline to Cyrenaica. This plateau, the Jabal Akhdar, contains three of Libya's leading cities—Banghazi (or Benghazi), Al-Bayda, and Darnah. Farther south the desert is studded with oases such as Jalu and Jaghbub. The Fezzan, in the southwest, is largely a series of depressions with occasional oases. There are no perennial rivers in the country.