The crypt at St Marys is believed to date from 1078 – 1086 and was built over the place where St Cedd was buried.

Inside are a number of fragments of crosses and earlier church buildings.

The pillar with snakes is thought to date from the 10th century,  with a much simpler sword carved onto the stone in the background.

These two fragments in the foreground may be from an 8th century shrine.