The Jebel Akhdar (The Green Mountain'), is part of Al Hajar Mountains range in Ad Dakhiliyah Governorate of Oman. It extends about 300 km (190 mi) northwest to southeast, between 50–100 mi (80–161 km) inland from the coast of the Gulf of Oman.This mostly limestone mountain is one of the highest points in Oman and eastern Arabia. Jebel Akhdar forms the central section of Hajar range, and is located around 150 km (93 mi) from Muscat. The range is mostly desert, but at higher altitudes receives around 300 mm (12 in) of precipitation annually moist enough to allow the growth of shrubs and trees and support agriculture. It is this that gives the mountains their "green" name. An old stronghold on ...