beach coastline England Great Britain horizon kent landscape natural nature rockpool sand sandy sea shore sky summer tide wave Ecoregion english flower grass grassland Land lot meadow Natural landscape plant Plant community Terrestrial plant cumbria fell moorland pasture ridge sedge tussocks valley view wilderness cloud crop farm February field hedge rural Sussex tree winter woodland canada cliff conifer current danger evergreen fierce forest gorge power river rock Rockies wall water wood catastrophe disaster ditch flood flooded gate hay roll somerset uk boulders conifers green lake mountain reeds rocks Rocky Mountains snow fresh plain spring bird coast gravel gull seagull shingle space