prehistoric megalithic dolmen de axeitos at riveira, rias baixas, coruna, galicia, spain

4000-3600 age ancient archaeological archaeology architecture art axeitos baixas building burial celtic circle civilisation civilization coruna culture dated destination dolmen europa forest galicia grave history landmark landscape mausoleum megalithic menhir monument nature neolithic old outdoors prehistoric prehistory religion rias riveira rock ruin scenic spain stone structure tomb tourism travel used