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
Maidstone the Hermitage Millennium Amphitheatre. Maidstone is mentioned several times in Ian Fleming's 1955 James Bond novel, "Moonraker". Villain Hugo Drax passes through King Street and Gabriels Hill and later stops at the Thomas Wyatt Hotel. Writer Jack London recounts his visit to Maidstone in his 1903 book "The People of the Abyss". Whilst living in the slums of London in the summer of 1902, he heads to Maidstone in search of hop-picking work up the London Road. He finds lodgings with a "Sea Wife" living in the poor quarter of Maidstone, and persuades her and her husband to let him