The Crossrail project in London, an east-to-west rail network, has unearthed what’s being called remnants of a “Mesolithic tool-making factory”
used by residents living on the Thames River 9,000 years ago.
The BBC and others report that the early inhabitants at the site turned river cobbles into flint tools at the site, where gold and a Roman road have also
"This is a unique and exciting find that reveals evidence of humans returning to England and in particular the Thames Valley after a long hiatus during the Ice Age,” lead archaeologist Jay Carver told the BBC.
"The concentration of flint pieces shows that this was an exceptionally important location for sourcing materials to make tools that were used by early Londoners who lived and hunted on Thames Estuary islands."
According to another report from the BBC, from the beginning of this month, the project – Europe’s largest-ever construction effort – is halfway completed, “having absorbed over 25 million working hours and produced around eight miles of tunnels.”