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
Clacton-on-Sea between Jaywick and Holland-on-Sea along the coastline and Great Clacton to the north. The relevant local authority is Tendring District Council. It is at the south-eastern end of the A133. The resort of Frinton-on-Sea is nearby to the north-east. Clacton has a pleasure pier, arcades, a golf course, caravan parks and an airfield. The town and its beaches are still popular with tourists in the summer and there is an annual entertainment programme including the Clacton Carnival, which starts on the second Saturday in August and lasts for a week. Clacton Airshow, an aerial display, takes place on the Thursday