But it does make me wonder why these neolithic burial sites that dot the English landscape all seem to be (to me at least) more resonant and unheimlich than other remains in other lands. Because the Japanese, say, have no Grendel and his Mum equivalents, no barrow wights, no things that come out of dark meres and tarns? Yes, they have pools haunted by kappa, but they also use kappa to advertise sake. No one cutesies up Grendel, had you noticed? The French have their menhirs and standing stones but the iron hand of rationality has squeezed any possibility of fantods out of them. They're what Obelix carries around. The Scandinavians- yeah, they do have haunted landscapes, I seem to recall, sunny and rational as they are the rest of the time.
But it's the English landscape that gives me the impression of deep time, of past piling up in an unpleasant way, and that so easily seems imbued an air of unplaceable menace. Cf Robert Holdstock, John Gordon, and Alan Garner (though oddly, I think he does it less subtly than the others.)