There can be little doubt that down to the beginning of the Early Iron Age the greater part of the Ager Veientanus, in common with the adjoining territories, was still covered by the primeval forest of which the Ciminian Forest of early Roman history was the still-considerable surviving remnant. There were doubtless trails through the forest, and the activities of hunters and charcoal burners would account for sporadic finds of stone implements (in so far as these have been correctly identified as of Neolithic or Bronze Age date). But the main centres of settlement at this early date lay elsewhere, along or near the coast and a few of the larger river valleys. One of these was, inevitably, the Tiber itself; another the river Fiora and the uplands around Lake Bolsena, forming a link between the coast and the middle valley of the Tiber. Outside these clearly defined areas of settlement the prehistoric archaeological record is largely a blank.