atlantic danger islands islets lane marker norway ocean sea Sea lane sign tower warning water waves fluid horizon liquid sky bridge coastline entrance fjord narrow rock blue cool fun guidelines inviting lanes leisure lines pool refreshing ripples sport swimming tiles bank building cottages England english Gloucestershire Great Britain historical homes houses old path peace river riverside rural village water resources watercourse window stone valerian Causeway destination direction distance home house Lofoten Islands marsh norwegian road route straight transport travel reeds mountains catastrophe disaster flood flooded landscape risk somerset uk winter coast ditch green nature summer track trees view