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 Coastal Academy 1953, a new building on the west side of Pathfields Road was opened as the 'Clacton County Secondary School for Girls' with Miss Lawrence as Headmistress. The original building on the east site became the 'Clacton County Secondary School for Boys' with Mr K. Portman as Headmaster. In September 1973 the two schools were amalgamated to form Colbayns High School under the headship of Mr. D. King. He was succeeded by Mr. J. Midgley in 1984. In 1988, Mr. John Holt, who joined the staff in 1964, became Headmaster. With the Governing Body, he saw the school through into successful