About three miles to the west of the South Foreland, another and much smaller stream, fed from the lower chalk and greensand, flows down a deep valley, and, reaching the sea between two considerable heights, has given origin to the port, town, and castle of Dover, so called, without doubt, by derivation from a British name represented in the Roman times by Dubris. The town and port lie deep in the valley. Of the heights, a part of that to the west has been rendered famous by Shakespeare, and has long borne his name. That to the east is known as the Castle Hill, so called from the fortress by which, under some form or other, it has been crowned from a very remote period. A position so convenient and so capable of defence would, upon any shore, have attracted the notice of the very earliest inhabitants; for not only was the height strong and the port convenient, but these advantages were found at the point at which the island approached nearest to the Continent, and at which those who crossed the straits, whether as friends or foes, would first make the land, and, if not obstructed, would come ashore. The position, therefore, was of far more than local importance, and would be sure to receive the attention not only of the chiefs of the Cantii, but of the rulers, if such there were, of the whole of Britain. It is therefore probable that haven, town, and fortress date from very nearly the first settlement of the country. Although the Western or Shakespeare’s Cliff is part of a larger range, the Castle Hill is better suited for defence. It is, in fact, an isolated knoll about 1,000 yards north and south, and 500 yards east and west, the summit being a steep and narrow ridge. Towards the south its boundary is the sea cliff, 320 feet high, and to the west the deep valley of the town. To the east and north are other valleys, less deep but by no means inconsiderable, and the sides of which are steep. Moreover, the whole hill is of chalk, that is to say, of a material easily scarped and capable of retaining any general outline to which it may be cut.