England exercise farm fence field footpath Great Britain hike landscape lane path snow snowy South Downs Sussex track trail Trek uk walk walker winter barrier boundary enclose enclosure green meadow natural nature pastoral pasture post summer support view bridleway chalk countryside english hill rural shade shaded shady slope tree barley cereal crop Ears golden grain Gramineae harvest head Hordeum vulgare monocotyledon plant ripe seed windswept yellow canola cloud distance distant far oilseed rape sky spring blue February hint sunlight vegetable woodland animals grass Levin Down livestock mammals peace sheep bale brown cows domesticated feeding hay herd hillside