The Jurassic Coast consists of Triassic, Jurassic and Cretaceous cliffs, spanning the Mesozoic Era, documenting 180 million years of geological history.
The site shows excellent examples of landforms, including the natural arch at Durdle Door, the cove and limestone folding at Lulworth Cove and an island, the Isle of Portland. Chesil Beach is a fine example of both a tombolo(a deposition landform in which an island is attached to the mainland by a narrow piece of land such as a spit or bar)and a storm beach(a beach affected by particularly fierce waves). The site has stretches of both concordant and discordant coastlines. Due to the quality of the varied geology, the site is the subject of international field studies. This area was home to Mary Anning, a palaeontologist who studied the fossils of the coastline around Lyme Regis and discovered the first complete Ichthyosaur fossil.
The highest point on the Jurassic Coast, and on the entire south coast of Britain, is Golden Cap at 191 metres
The site was featured on the television programme Seven Natural Wonders as one of the wonders of the South West (of the UK), and in a 2005 poll of Radio Times readers, the Jurassic Coast was named as the 5th greatest natural wonder in Britain.
During World War II several sections of the Jurassic Coast became property of the Ministry of War. One of the Royal Navy’s largest bases was at Portland Harbour, though it has since closed. A major army base at Bovington remains in use today, and large areas of land, including the coast between Lulworth Cove and Kimmeridge, including Tyneham ghost village, are still only partially accessible. Areas of the coast near Exmouth, The Fleet at Weymouth and the beaches at Studland have also been used for training for war, but have since been returned to civilian use.
Stacks, such as Old Harry’s Rocks at Handfast Point, are common along the coast.
Parts of the coast, especially around Portland, can be dangerous, and shipwrecks have been a feature of the coast. In January 2007 the coast experienced its most environmentally damaging wreck when the MSC Napoli, a 2,400 capacity container ship, was beached at Branscombe near Sidmouth, losing oil and cargo.
On May 6 2008, a 400-metre (1,312 ft) section of the coast was destroyed after a landslip that was described as the worst in 100 years.