It lies upon the side of a hill, or rather a rising ground. Its figure is almost square: for from the one side of it, which shoots up almost to the top of the hill, it runs down, in a descent for two miles, to the river Anider; but it is a little broader the other way that runs along by the bank of that river. The Anider rises about eighty miles above Amaurot, in a small spring at first. But other brooks falling into it, of which two are more considerable than the rest, as it runs by Amaurot it is grown half a mile broad; but it still grows larger and larger, till after sixty miles' course below it, it is lost in the ocean. Between the town and the sea, and for some miles above the town, it ebbs and flows every six hours with a strong current. The tide comes up about thirty miles so full that there is nothing but salt water in the river, the fresh water being driven back with its force; and above that, for some miles, the water is brackish; but a little higher, as it runs by the town, it is quite fresh; and when the tide ebbs, it continues fresh all along to the sea. There is a bridge cast over the river, not of timber, but of fair stone, consisting of many stately arches; it lies at that part of the town which is farthest from the sea, so that the ships, without any hindrance, lie all along the side of the town. There is likewise another river that runs by it, which, tho it is not great, yet it runs pleasantly, for it rises out of the same hill on which the town stands, and so runs down through it and falls into the Anider. The inhabitants have fortified the fountain-head of this river, which springs a little without the towns; that so, if they should happen to be besieged, the enemy might not be able to stop or divert the course of the water, nor poison it; from thence it is carried in earthen pipes to the lower streets. And for those places of the town to which the water of that small river can not be conveyed, they have great cisterns for receiving the rain-water, which supplies the want of the other.