Holland-on-Sea Cliff Holland-on-Sea Cliff Holland-on-Sea Cliff is a 0.1 hectare geological Site of Special Scientific Interest in Holland-on-Sea, north-west of Clacton-on-Sea in Essex. It is a Geological Conservation Review site. This site is of great importance in understanding the evolution of the London Basin, and it is the type site for two different gravels. The "Lower Holland Gravel" was the final terrace laid down by the River Thames before the river was diverted south during the Anglian glaciation around 450,000 years ago. The "Upper Thames Gravel" was deposited when the Thames was blocked by ice and not reaching the area. As the
Holland-on-Sea for bathing and boating. There are two Sites of Special Scientific Interest, Holland Haven Marshes, part of which is Holland Haven Country Park, and Holland-on-Sea Cliff. Holland-on-Sea was known as Little Holland, a small village until the early 20th century. During the Second World War Holland-on-Sea was fortified against German attack. There is a martello tower in nearby Clacton, which was also used during the Second World War. There is a Second World War pill box in Holland Haven Country Park. After the Second World War Holland-on-Sea went back to being a holiday town. There are several elected representatives at