Buruntza holds a relevant archeological site on the slopes near the summit. It consists of an enclosed settlement of the Iron Age (first millennium BC), where remains of cereal (wheat, oats, barley) and leguminous plants (broad bean, pea) have been found, among other vestiges. This data have provided the basis for a newly released and breakthrough theory establishing the ancient boundaries between the Vascones and the Varduli at the east of the mount (in Leitzaran).