Exploring hidden Ice Age landscape in the English Channel

An ambitious survey of a former Ice Age landscape, which sits off the coast of Jersey in the English Channel seabed, is to be carried out on foot by a team of archaeologists led by UCL’s Institute of Archaeology.


The survey will take place on a section of intertidal reef known as the Violet Bank, which on a low spring tide comprises a further 10km2 of Jersey’s well preserved Ice Age landscape and includes the Neanderthal site of La Cotte de St Brelade.

The UCL project aims to discover what records of early human behaviour, ancient environment and past climate change, the Violet Bank holds. It also seeks to understand how people used this landscape before the sea inundated it around 6,000 years ago.

Taking advantage of some of the largest tides in the world, the team will spend a week living in a refuge tower some 3km from land and, after daily periods of complete isolation by the sea, will explore the site at very low spring tides in May 2020.

The team already has evidence, collected by members of the island’s Société Jersiaise, to suggest the sediments from ancient Ice Age landscapes lie hidden beneath more recent sands and shingle. This project represents the first stage in specialist recording to map these deposits and understand what potential they hold.

Project Leader Dr Matt Pope (UCL Institute of Archaeology) said: "The Violet Bank is a starkly beautiful and scientifically important landscape. We know there is a record of Neanderthal archaeology, extinct fauna such as mammoth and more recent prehistoric monuments out there waiting to be discovered and documented. This survey is about discovering how we can explore the seabed, in the short tidal windows available, in as methodological and safe a way as possible."

Violent Bank* is a solid granite reef, which extends up to 4.5 km from the shore. Within gullies of the reef, at sea level, are the deposits of former land surfaces and freshwater pools laid down in the Ice Age and more recent prehistory.

The survey will be based on a series of short four-hour excursion beginning with descending the granite steps of Seymour Tower, a 18th Century fortification surrounded by sea at high tide. The team will follow gullies in the granite, taking sediment samples and collecting stone tools and other artefacts.  As the reef can be dangerous, expert guides are accompanying the team.

They will look for areas of human activity in the Ice Age to begin to understand how Neanderthal people and other early human groups used the now-submerged landscape of the English Channel, an ancient landscape the team have called La Manche, and how this seabed record can be related to known records on land.

Jon Carter, Chief Executive of Jersey Heritage, a partner in the project, said "We are delighted to be part of this exciting and ambitious project to discover more about Jersey’s prehistory. The Island has an incredible Neanderthal story to tell and one that has already been placed on the international map by the ancient site of La Cotte de St Brelade, located on Jersey’s south-west coast. La Cotte is just a glimpse of the Ice Age landscape that lies beneath the surface, both inland and out at sea, and we look forward to seeing what this new and innovative survey reveals."

The project will act a pilot for wider surveys of prehistoric potential in the English Channel region. It will help the team develop ways of locating important artefacts and scientific records from landscape, which will become increasingly inaccessible and at risk of erosion as climate change drives sea level rise.

Links 
  • UCL Institute of Archaeology
  • Dr Matt Pope’s academic profile
  • Jersey Heritage
Image
  • Credit: UCL Archaeology


E: n.downes [at] ucl.ac.uk


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