Tunis was originally a Berber settlement. The existence of the town is attested by sources dating from the 4th century BC. Situated on a hill, Tunis served as an excellent point from which the comings and goings of naval and caravan traffic to and from Carthage could be observed. Tunis was one of the first towns in the region to fall under Carthaginian control, and in the centuries that followed Tunis was mentioned in the military histories associated with Carthage. Thus, during Agathocles' expedition, which landed at Cape Bon in 310 BC, Tunis changed hands on various occasions.