Media playback is unsupported on your device

Europe's oldest prehistoric town unearthed in Bulgaria

1 November 2012 Last updated at 18:35 GMT

Archaeologists 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.

Nikolay Hristov, the Head of Provadia History Museum, says that archaeologists from many different countries have been involved in the process of examining the site.