arqueological site of atapuerca, atapuerca mountains, spain

age ancient antecessor antique arqueologic arqueological atapuerca beautiful bones bronze burgos castile cave cranium dolina earth europe evolution excalibur excavation formation fossil geology gran heidelbergensis heritage historical history holidays hominid hominins homo human landscape leon miguelon mountains neolithic old outdoor paleontology pleistocene prehistoric primitive rock scenery scenic science site skeleton skull spain stone tourism travel unesco view world