Topic summary
Wadi Derna
The Wadi Derna is a river valley in Libya which leads down from the Jebel Akhdar mountains to the port city of Derna. Like many other wadis in North Africa, it is an intermittentriverbed that for much of its length contains water only when heavy rain occurs. It is 75 kilometres (47 mi) long and drains a drainage basin of 575 km.