An archeologist says he has found the remains of a Roman quarry in the old harbor at Barry in the Vale of Glamorgan which provided the limestone for a Roman fort.
Karl-James Langford of Barry says the pottery remains show that the beach man-made walls might date back to 1,900 years ago, the state-funded BBC reported.
The quarry was used until the 19th century, but its origins were unknown.
"It's not in the records - it may have been completely ignored because it's too obvious," Langford said, adding that the quarry was the limestone source for the Roman fort whose ruins can be seen in the walls around Cardiff Castle.
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