Quotations about the Geography of the Moors from the web-site The Reader's Guide to Wuthering Heights
One time I passed the old gate, going out of my way, on a journey to Gimmerton [from Thrushcross Grange]. … I came to a stone where the highway branches off on to the moor at your left hand; a rough sand-pillar, with the letters W. H. cut on its north side, on the east, G., and on the south-west, T. G. It serves as a guide-post to the Grange, the Heights, and village.
There was no moon, and everything beneath lay in misty darkness: not a light gleamed from any house, far or near all had been extinguished long ago: and those at Wuthering Heights were never visible [from Thrushcross Grange]—still she asserted she caught their shining.
'Look!' she cried eagerly, 'that's my room with the candle in it, and the trees swaying before it; and the other candle is in Joseph's garret. Joseph sits up late, doesn't he? He's waiting till I come home that he may lock the gate. Well, he'll wait a while yet. It's a rough journey, and a sad heart to travel it; and we must pass by Gimmerton Kirk to go that journey! …'