abstract background bitter brassica brassicaceae brassiceae broccoletti broccoli calcium cuisines food galician green grelos iron nature nutty potassium pungent rabe rapa rapini saavem shape shapes texture traditional typical vegetables vitamins beach coast coastline pebble pebbles polished rock rocks rocky round sand stone stony sundrocks water wet blue boat boats creel eat eating fish fisher fishers fishing fly flying gull industrial industry keep keepnet net ocean power sea seagull seagulls sky tidal transportation wave waves wing wings age ages ancient architecture bronze castro Celtiberian celtic cidás circular citania citanias cities cividades cliff culture defendable defensive elevation fort fortified hill hill-fort hillfort hilltop house houses maritime oval peninsula place refuge security settlement wall walls