Kent coastline of Kent is continuously changing, due to tectonic uplift and coastal erosion. Until about 960, the Isle of Thanet was an island, separated by the Wantsum channel, formed around a deposit of chalk; over time, the channels silted up with alluvium. Similarly Romney Marsh and Dungeness have been formed by accumulation of alluvium. Kent's principal river, the River Medway, rises near East Grinstead in Sussex and flows eastwards to Maidstone. Here it turns north and breaks through the North Downs at Rochester, then joins the estuary of the River Thames as its final tributary near Sheerness. The Medway is
History of Rochester, Kent crossing the river near Maidstone thus provoking the Battle of Maidstone. By the time Fairfax approached Rochester Lord Norwich had marched off towards London, and Rochester itself was spared a battle. The bridge did not get off as lightly as the town however, the retreating Royalists destroyed the drawbridge section of the bridge and threw the planks into the river. In another contrasting pair of events, Rochester houses saw one king restored and another abdicate. Sir Francis Clarke entertained King Charles II on the eve of his restoration to the throne on 20 May 1660. Following this, his home in