countryside direction England english exercise footbridge footpath forest Great Britain landscape natural nature path spring Sussex track trail travel trees walk woodland chalk downland hike hills rural South Downs summer Trek view bare beginning branches fence field outdoors start winter arch autumn color colour dappled fall garden lime linden London park pergola shadow sunlight Tilia tree alone calm crop Downs farm grain lone peace quiet serene south tranquil verge bark conifers cool deciduous evergreen green light refreshing shade Surrey trunk leaves November shadows bridleway dirt road environment fields distance long national park sky disused estuary line Mawddach peaceful railway river wales water welsh clouds meadow