Here’s what you’ll learn when you read this story:Restoration efforts at the Church of Saint Philibert in France led to the discovery of a forgotten staircase and a 400-year-old burial vault. The archaeological finds didn’t stop there, with experts locating sarcophagi from the sixth century. The current 12th century church was built over an array of older churches and buildings. An excursion down a forgotten staircase in a 12th century French church resulted not only in a lost burial vault, but in a trip back in time to the sixth century. The discovery was part of a restoration project at the Church of Saint Philibert in Dijon, France, which was necessary because of an ill-advised decision made in the 1970s.