 Due to the rich and extensive forests of their mountainous country, their houses were mostly wooden huts, and they rarely used stone constructions except in some major fortifications.Their settlements were mostly on hilltops, including between 400–3,000 dwellers, and the main Iapodic settlements in Roman times were "Metulum", "Terpon", "Arupium" and "Avendo".They cultivated chiefly cereals and grapes, and kept varied cattle.