boundary destination England field Great Britain green leaf leaves natural nature oak old path Quercus Sussex track trail tree trunk algae blocks cave chalk cliff coastline face hole kent landscape Molluscs rock seashells tideline white beech beech hedge Fagus garden grass hedge hedgerow promenade somerset uk united kingdom walk Ammophila Camber Sands coastal dunes english evening maritime marram grass plant sand wild footprints 17th century architecture border classical flower Greenwich Inigo Jones landmark London mansion Queen's House stone bank Crassula helmsii edge margin stream supply tiny water woodland 12th Century ancient christian church Cornish cornwall Grade I historical religion St Enodoc steeple 3rd Century Burgh Castle fort norfolk Remains roman turrets walls bay blue hillside ocean rocks sea shore surf tide waves power