It's obvious. Who has loadsa dosh to invest in "The Great Restoration - making Avebury Live Again Just Like it used to, Approximately" - the Beeb!
Forget Time Team, this is archaeology with balls. Inside a year it could look like it ought to (says the voice-over bloke)
Why the beeb? Because they have a track record - remember their collaboration with Atkinson at Silbury in the sixties? State of the art technology, spectacular results, no mistakes....