gaztelugatxe with another small neighboring island, aketx, they form protected biotope that extends from the town of bakio

aketx aquech atlantic basque bay biscay blue bluff calm cape cave cirrus cliff cloud coast coastline country dreary emerald gaztelugatxe geology greenery harbor horizon horizontal island karst limestone matxitxako mountain nature ocean peninsula photography ridge ripple rock sea seascape shore silence sky spain sparse stone summer surface turquoise viewpoint water