The old Isle of Ely lies in the very center of the Fens. It is a range of low gravel hills, shaped roughly like a human hand. The river runs at the wrist, and Ely stands just above it, at the base of the palm, the fingers stretching out to the west. The fens themselves, vast peaty plains, the bottoms of the old lagoons, made up of the accumulation of centuries of rotting water-plants, stretch round it on every side; far away you can see the low heights of Brandon, the Newmarket Downs, the Gogmagogs behind Cambridge, the low wolds of Huntingdon. To the north the interminable plain, through which the rivers welter and the great levels run, stretches up to the Wash. So slight is the fall of the land towards the sea, that the tide steals past me in the huge Hundred-foot cut, and makes itself felt as far south as Earith Bridge, where the Ouse comes leisurely down with its clear pools and reed-beds.