Aïr Mountains by Ténéré Desert, Niger18.2N 7.9E
The Aïr Mountains form a triangular massif, located in northern Niger, within the Sahara desert. They rise to more than 6,000 ft (1 830 m) and extend over 84 000 km², and have an average altitude between 500 and 900 m. The mountains consist of nine almost circular massifs rising from a rocky plateau, bordered by the sand dunes and plain of the Ténéré Desert to the east (right edge).
The massif is a plateau consisting of a Cambrian age erosion surface on Precambrian metamorphic rocks, punctuated by a series of flat-topped, granite intrusion peaks, which include Mont Idoukal-n-Taghès (Niger’s highest point at 2022 m), Mont Tamgak (1988 m), Mont Greboun (1944 m), and others. The massif contains volcanic features including the extinct calderas, volcanic cones, and tuff rings.