THE history of the Stonehenge landscape could be rewritten completely after a new discovery by archaeologists.

Remains of a huge ceremonial gathering place were found near Larkhill, dating back to 3650 BC - about 700 years before Stonehenge was built.

The remains, which were discovered during archaeological excavations ahead of construction of new services accommodation, are of a Neolithic enclosure, a major ceremonial gathering place measuring about 200m in diameter.

So far pottery, worked flint, animal bones and human skull fragments have been found in the ditches surrounding the enclosure, which would likely have been used for temporary settlement, exchanging animals and other goods or for feasting and other ritual activities, including the disposal of the dead.

Dr Matt Leivers of Wessex Archaeology said: "This is an exciting new find, and one that transforms our understanding of this important monumental landscape."

The majority of the site lies within the Larkhill Garrison, where it will remain unaffected by the current works.

Only about 70 enclosures of this type are known across the UK, and they're thought to be some of the earliest built structures in the British landscape.

Nearby, at Bulford, archaeologists have found a unique double henge, the only known example in Britain, which dates back to around 2900 BC.

Martin Brown, the principal archaeologist for WYG, who are managing and directing the archaeological work on both site, said: "These discoveries are changing the way we think about prehistoric Wiltshire and about the Stonehenge landscape in particular.

"The Neolithic people whose monuments we are exploring shaped the world we inhabit: they were the first farmers and the first people who settled down in this landscape, setting us on the path to the modern world.

"It is an enormous privilege to hold their tools and investigate their lives."