autumn bridleway countryside England english exercise fall footpath forest Great Britain green lane leaves natural nature path rural shade shadows shady Sussex trail travel trees walk woodland adventure blue danger fly glide glider hang-glider hangglider hanging Harness landscape outdoors panorama ropes sail sky soar South Downs sport suspended branches calm canal February peaceful reeds reflections river still sunny towpath track tranquil water winter Betula birch holly ilex peace quiet ramble shadow sunlight arid barren brown bushes cliff clouds desert dry harsh hills Israel Judea Judean limestone mount mountains rainstorm rock sere severe stark storm vegetation gorge ravine route wadi country field grass hike hikers madow meadow summer walkers