Archaelogists in Bulgaria say they have uncovered the oldest prehistoric town found to date in Europe. The walled fortified settlement, near the modern town of Provadia, is thought to have been an important centre for salt production. Its discovery in north-eeast Bulgaria may explain the huge gold hoard found nearby 40 years ago.
Archaeologists believe that the town was home to some 350 people and dates back to between 4700 and 4200 BC, which is about 1.500 years before the start of ancient Greek civilisation.
There are huge walls around the settlement, built with stone blocks. This is also something unseen in excavations of prehistoric sites in south-east Europe so far.
Excavations have also uncovered the remains of two-storey houses, a series of pits used for rituals, as well as parts of a gate and bastion structures, A small burial ground was discovered at the site earlier this year.