Oops, done Long Meg - should have been Hyperion :-) Keats is writing about Castlerigg by the way.
Hyperion: Book II
Scarce images of life, one here, one there,
Lay vast and edgeways; like a dismal cirque
Of Druid stones, upon a forlorn moor,
When the chill rain begins at shut of eve,
In dull November, and their chancel vault,
The Heaven itself, is blinded throughout night.
Each one kept shroud, nor to his neighbour gave
Or word, or look, or action of despair.