London: Archaeologists working on the Crossrail project have unearthed rare evidence that humans lived on the River Thames 9,000 years ago.
A Mesolithic tool-making factory featuring 150 pieces of flint was found at the tunnelling worksite in Woolwich, the BBC reported.
Archaeologists said prehistoric Londoners were using the site to prepare river cobbles which were then made into flint tools.
Gold has also been discovered at its site in Liverpool Street.
Archaeologists said they were mystified as to how such a precious and expensive gold item made its way to what was then regarded as a deprived area.
They believe the 16th Century gold coin was used as a sequin or pendant, similar to those worn by wealthy aristocrats and royalty.
Also at Liverpool Street, a well made Roman road has been discovered - complete with a human bone found in the road`s foundations.
Next year, archaeologists will begin excavating 3,000 skeletons from Bedlam, a 17th Century burial ground close to Liverpool Street.
Archaeologists are hopeful that when they start large scale excavations to remove the skeletons they will also locate more of the Roman road, along with foundations of Roman buildings that stood alongside it.