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 Maidstone made locally, notably at Kit's Coty and the Countless Stones. The Romans brought Maidstone greater importance; their road from Watling Street at Rochester to Hastings passed through the site, connecting with the iron industry of the Weald: two villas and a number of other sites, have been discovered nearby. They were also among the first to extract stone (the sandstone known as Kentish ragstone) from the area. A great many other finds relate to this period. Before the arrival of the Normans, Maidstone had been the meeting place of the hundred of Maidstone in the Lathe of Aylesford.The Normans, in