arqueological site of atapuerca, unesco world heritage site, spain

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