sheep obstacle over small beck

amlyd barrier beck becks bracken crossing cumbria district erosion exploration fell fence fences fern field grass gravel green hill hillside incline lake landscape link low mountain nature obstacle outcrop overlooking path peak picture picturesque pike prevent put reaching ridge rigg rock rough rugged scenic scree serene sheep side slope small stone stop sunlit tranquil tussock undulating unspoiled valley wainwright wall water wispy wooden wrong