Major excavation to open Viking graves The largest excavation of a Viking burial site in 50 years is underway at a farm in Vestfold, south of Oslo. Archaeologists already started finding ship nails last week, and chances are good more Viking treasures are about to be revealed. This aerial view shows the burial sites, including contures of a ship at far left. PHOTO: DAGFINN SKRE, UNIVERSITETET I OSLO Expectations are high as experts start opening up ancient Viking gravesites over the next few weeks. "This is an incredibly exciting project," says Lars Erik Gjerpe of the University of Oslo's Historic...