Unlocking Stonehenge's secrets

Stonehenge is a British wonder of the ancient world - it's also as familiar a part of our landscape as the White Cliffs of Dover.
It's such an iconic sight, we tend to forget that two fundamental questions remain - when was it built and what was it for?
For hundreds of years, these questions have intrigued and frustrated antiquarians and visitors alike.

Remarkably, in the next fortnight, we might just have the beginning of some answers.
On Monday, the first excavation to take place at Stonehenge in nearly half a century will start.
For Dr Simon Thurley, chief executive of English Heritage, this is a truly unique moment: 'Very occasionally, we have the opportunity to find out something new archeologically - we are at that moment now.
'We believe that this dig has a chance of genuinely unlocking part of the mystery of Stonehenge.'"
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