Abo

Abo forms the northwestern extremity of the Tibesti mountains, rising above the desert northeast of Wour. Its rocky slopes belong to a landscape shaped by volcanic activity and cut by dry river valleys. The Enneri Wouri drains part of the massif as well as the Toussidé volcanic complex farther south. Rainfall is scarce, but floods can briefly turn these dry beds into streams before the water disappears into the surrounding ground.