Hidden complex of monuments found at Stonehenge site
10 September 2014 Last updated at 20:02 BST
Scientists have discovered a hidden complex of archaeological monuments at Stonehenge, challenging the modern impression that it stood in isolation.
They found the previously unknown structures when they scanned a wide area around the site, to a depth of ten feet.
They also discovered evidence of up to 60 huge pillars within the mile-wide site at nearby Durrington Walls, and a wooden burial house 3,000 years older than Stonehenge.
Duncan Kennedy reports
Operation Stonehenge: What Lies Beneath starts on BBC2 on Thursday September 11 at 20:00 (except in Scotland).