The secrets of a 15th Century Norfolk scroll, that has been unreadable for decades, are set to be unlocked when it is virtually unrolled using a 3D x-ray.

The badly water-damaged parchment, from Bressingham Manor, would disintegrate if physically opened but it has now been "read" using microtomography.

The process scans the iron and copper used in the ink to reveal a high contrast image of the manuscript.

Details of what the scroll contains are expected to be revealed by Christmas....