panorama from castlewood viewpoint over derwentwater near

derwentwater castlewood wilderness viewpoint landscape reservoir panorama district mountain keswick plateau terrain geology tourism valley river ridge cliff ruins lake hill tree rock district cumbria north-west england britain uk landscape outdoor nature scenery countryside resort holiday vacation tourism sightseeing walk stroll hike ramble leisure path footpath track trail summer sun blue sky derwentwater keswick castlehead viewpoint view panorama cat bells causey pike mountain hill peak summit ridge