Pits add to Stonehenge mystery

Researchers say they've found two pits to the east and west of Stonehenge that may have played a role in an ancient midsummer ceremony. The discovery suggests that the 5,000-year-old circle of stones we see today may represent just a few of the pieces in a larger geographical, astronomical and cultural puzzle.

The previously undetected pits could provide clues for solving the puzzle.

"These exciting finds indicate that even though Stonehenge was ultimately the most important monument in the landscape, it may at times not have been the only, or most important ritual focus, and the area of Stonehenge may have become significant as a sacred site at a much earlier date," Vince Gaffney, an archaeology professor at the University of Birmingham, said in a news release issued over the weekend.

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