Harold accompanies William in a campaign against Count Conan II of Brittany. Harold rides in front of William. William is carrying a club and wearing a gambeson. The gambeson is a quilted vest made of cotton linen or wool, reinforced with leather and stuffed with horsehair. They are riding past Mont St. Michel, before arriving at the banks of the River Couesnon. Mont St. Michel was declared a historic monument in 1874. The Mont Saint Michel and its bay were added to the UNESCO list of World Heritage Sites in 1979. The River Couesnon divides the provinces of Normandy and Brittany. During the Spring a tidal bore can be seen working its way up the river.