autumn ecology ecosystem England english fall forest Great Britain green leaf leaves natural nature pond pool reflection Sussex trees water woodland ancient arch architecture bridge Cahors flow fortified France french mediaeval medieval old protection river secure security stone strong towers weir border boundary edge exposed farm field hill hillside landscape moor moorland remote spring view wild chilly cold countryside footpath slope snow snowy track tree Trek walk winter blue cabin chalet decorations fairy lights festive gold golden light lights noel presents red sparkle star wood wooden xmas cloud country grass lane meadow peaceful quiet road rural sky summer tranquil cereal crop ear grain harvest plant ripe ripening success wheat wheat field wheatfield cool dappled forest trees oak oaks refresh refreshing shade shadow sun sunlight air airbus airliner airplane arrival aviation commercial departure descending flight flying jet jetliner passenger plane take-off takeoff tourism bridleway exercise logs management path travel grasses South Downs trail