access barrier clouds countryside England english entrance exercise footpath gate Great Britain landscape meadow natural nature sky summer Sussex walk wooden abundance abundant Apiaceae Bedfordshire damp field flowers many profusion riverside spring umbellifer white cloud farm fence green pastoral peace South Downs track trees valley bend country crops fields hills lane light Morning road rural sunlight wet wiltshire winter hedge branch current danger flow powerful river strong surge surging thames tree violent water crop evening oxfordshire panorama shadow view arch chalk cliff coast face hole kent low peephole rock sea shore stone tide grass plain woodland