The Romans do not seem to have reaped much fruit from their labours, except perhaps in the complete pacification of the district. Holland affords but few traces of their settlement, except in pottery and coins found along the line of the banks, as at Holbeach, Fleet, Heckington, and Swineshead. There was an important oblong camp on the Witham at Redstone Gowt, about a furlong south of Boston, where remains have been found. Its importance was due to the two circumstances that here was a ferry in connection with the road called the Saltway into the Midlands, and that at this point a canal, now called the Old Hammond Beck, took over some of the Witham water due west round the end of Bicker Haven to Swineshead, and thence, taking a sharp curve, after a southerly course of thirteen miles, fell into the river Glen at Pinchbeck. This canal was here parallel to the Cardyke at distances of from four to six miles. It could not have been made until the seabank had been thrown up all round Bicker Haven to keep out the tides. The course of these banks show the enormous amount of land near the Wash—about 64,000 acres—that has since been gained by accretion. The Wash, called by Ptolemy “Metaris Æstuarium,” was a bay with an entrance some two miles narrower than at present, into which fell the waters of four tidal rivers—the Ouse, the Nene, the Welland, and the Witham. The Seabank, starting from Wisbech on the Nene estuary, proceeds north for about ten miles, and then curves round west to the Welland estuary below Spalding. But about eight miles farther south is another westerly bank, parallel to the first, from Cowbit to Tydd St. Mary. This bank, called “Ravenbank,” was probably used as a road from Ermine Street into Norfolk, and south of it, between the Welland and the Nene, are three entrenchments, a few miles apart, where Roman remains have been found. About Spalding, where the Westlode—an ancient drain now filled up—fell into the Welland, the Seabank turns north to Surfleet, and then, running west, north, and east to encircle Bicker Haven, reaches the Witham at Redstone Gowt. From this point it can be traced north to Wainfleet, and thence, with intervals, to beyond the entrance to the Humber opposite Spurn Point. Its character varies considerably in different places. Between Boston and Skegness it often appears too broad to be artificial; but in general it is only a few yards wide, at an elevation of from 10 to 20 feet, and is frequently used as a modern road.