This is a real belter seen on a large projection screen! however, one can dimly make out the rainbow over the valley. the valley is actually Black Sail Pass, which takes one from Buttermere into Ennerdale (noted for its dark forests when I was there last). There is also a Youth Hostel at the remotest part, known, strangely enough, as Black Sail Hut. The photo was taken from the climb to High Crag (2500' ish).