Earliest occupation phase at Dutsen Kongba rock shelter, Jos Plateau

Excavation at Dutsen Kongba, about 11 km west of Jos, conducted by the Antiquities Department in 1973, identified three phases of occupation. Phase A dates to the fourth or fifth millennium BC and has fewer artefacts than the succeeding phase and no ceramics. The microlithic industry is interpreted as the product of a nomadic hunting community who used the shelter as a factory site at regular intervals.