The House of the Wolfings

The tale tells that in times long past there was a dwelling of men beside a great wood. Before it lay a plain, not very great, but which was, as it were, an isle in the sea of woodland, since even when you stood on the flat ground, you could see trees everywhere in the offing, though as for hills, you could scarce say that there were any; only swellings-up of the earth here and there, like the upheavings of the water that one sees at whiles going on amidst the eddies of a swift but deep stream.
On either side, to right and left the tree-girdle reached out toward the blue distance, thick close and unsundered, save where it and the plain which it begirdled was cleft amidmost by a river about as wide as the Thames at Sheene when the flood-tide is at its highest, but so swift and full of eddies, that it gave token of mountains not so far distant, though they were hidden. On each side moreover of the stream of this river was a wide space of stones, great and little, and in most places above this stony waste were banks of a few feet high, showing where the yearly winter flood was most commonly stayed.
You must know that this great clearing in the woodland was not a matter of haphazard; though the river had driven a road whereby men might fare on each side of its hurrying stream. It was men who had made that Isle in the woodland.