Some of England's most sacred soil is being disturbed for the first time in more than four decades. Archaeologists are trying to solve the riddle of Stonehenge.
They hope to learn when and why the prehistoric monument was built.
Scientists estimate that the bluestones were first put in place about 2600 B.C. The original bluestones were removed about 200 years later and scientists hope to find bits of them embedded in the earth.
The World Heritage site is a favorite not only with tourists, but also with Druids, neo-Pagans and New Agers who attach mystical significance to the strangely shaped circle of stones.
There is great debate about the actual purpose of the structure.
The excavation project is set to last until April 11th.