arc bow colour covenant curve double England english Great Britain light natural nature rain rainbow rainstorm refract sign spectrum storm Sussex tree two crop farm field green hamlet home house landscape meadow peace rural South Downs uk united kingdom village beach children exercise family father grass healthy outdoors outing relaxing river riverside sandy shade shadows stroll strolling sunlight sunshine trees walking water waterside autumn beech bridleway deciduous Fagus fall footpath path track trail travel walk woodland leisure Surrey blue bluebells flowers Hyacinthoides non-scripta spring Trek bank branch color forest leaves trunk bushes Calluna flora Frensham Common heath heather heathland ling pink purple summer wild dappled Devon fort Hyacinthoides iron-age