bridge city coast coastline cross crossing dundee estuary hills iron maintenance metal rail repairs river sea shore shoreline Tay tracks water cornwall England english exercise footpath Great Britain landscape leisure path plants rocks st ives view walking bank beach branch driftwood mudflat ocean plant sand Soil summer sunny tree tropic twig wood bay blue boats Catalan catalonia Catalunya costa brava cove mediterranean moored rock Spain spanish village cloud clouds HDR horizon Nyberg sky stone stones wave waves winter boat cold Denmark fjord frozen ice icy mole peer season sun sunset