From BBC News
A timber circle dating back 4,000 years which was found in the sea off the Norfolk coast is to return to the county in a permanent display.
Seahenge, with 55 oak posts and a central upturned stump dating from the Bronze Age, was found emerging from a beach at Holme-next-the-Sea in 1998. Timbers were studied at the Bronze Age Centre, Peterborough, then preserved at the Mary Rose Trust, Portsmouth. Next month Seahenge will go on display at the Lynn Museum in King’s Lynn.
After Seahenge was excavated, 3D laser scanning revealed the earliest metal tool marks on wood ever discovered in Britain
9/20/12 Update from Lynn Museum, which now houses and preserves Seahenge.