From the summit of Grey Knotts you can look west and see all three lakes in the Buttermere valley. Loweswater is the furthest out, Crummock Water with its distinctive 'elbow' (the name means 'crooked' in Old English) and Buttermere just beneath you.
Look to the south and you can see the high central fells rising up, like the remains of the volcanoes that they are. Look east and you can peer down into Gillercomb where Sourmilk Gill starts to cascade down towards Seathwaite, and you can see the evidence of the workings of the glaciers from the last ice-age.
Grey Knotts is a curiously satisfying fell to climb - it demands a fair outlay of effort, but the sense of reward at the top is unbeatable.