Archaeologists will resume excavations at La Cotte de St Brelade this week, after nearly 40 years.
The coastal site near Ouaisné hasn't been studied since 1981 as it wasn't safe to access.
It dates back to the Ice Age and is said to be the biggest Neanderthal site in Europe.
Jersey Heritage CEO, Jon Carter, says they've had to work hard to protect the site from coastal erosion:
"The rocks in front of La Cotte had protected the site for thousands of years, but the proximity of the sea had begun to take its toll, threatening to wash away history and causing serious safety concerns.
"The work that has taken place was vital for the future conservation of the site. We are delighted that archaeologists can now safely return to La Cotte and uncover more of the fascinating stories that it holds."
Over the next two weeks, six archaeologists from UCL’s Institute of Archaeology, and Dr Beccy Scott, from the British Museum, will begin digging.

Details announced of free childcare for two and three year olds
18-year-olds to have access to Jersey social housing
CI ferry operators to work together to improve inter-islands travel
'Show up and play' football games to tackle festive loneliness
New website helps children and families navigate the digital world
More time in Jersey for French day-trippers
Rapist jailed more than two decades after his crime
Jersey Airport to see 20,000 passengers in the run up to Christmas
Comments
Add a comment