Archaeologists unearth Neolithic henge at Stonehenge
22 July 2010 Last updated at 07:40 BST
Archaeologists have discovered a second henge at Stonehenge, described as the most exciting find there in 50 years.
The circular ditch surrounding a smaller circle of deep pits about a metre (3ft) wide has been unearthed at the world-famous site in Wiltshire.
Archaeologists conducting a multi-million pound study believe timber posts were in the pits.
David Gregory reports.