Adrar Bous. Archaeology of a Central Saharan Granitic Ring Complex in Niger. By J.D. Clark, E.J. Agrilla, D.C. Crader, A. Galloway, E.A.A. Garcea, D. Gifford-Gonzalez (general ed.), D.N. Hall, A.B. Smith & M.A.J. Williams (eds.). Royal Museum for Central Africa, Tervuren, 2008, 404 pp. ISBN 9789074752435. € 35.00.