autumn bridleway countryside England english fall fence footpath Great Britain landscape oaks path Quercus rural Sussex track trail trees trunks wooden blue cloud crop Downs field golden hills meadow nature peace peaceful sky South Downs summer tranquil yellow ash fields Fraxinus fresh green spring Trek bank boundary farm flower natural post verge view wild hill panorama united kingdom valley village cottage home house slope steep Surrey summit top UP cold February flock graze line paddock snow snowy wall winter access Bedfordshire entrance open stile stone trailhead flowers Hampshire idyllic irises marsh plants pond reserve vegetation water yellow flags