What does Viking poo tells us about life 1,000 years ago?
11 April 2017 Last updated at 15:31 BST
Have you ever wondered what Viking poo looks like?
It is one of the star attractions at the Jorvik Viking Centre in York, England.
Examination under the microscope shows it contains pollen grains and the remains of cereal bran.
The poo also contains the eggs of a nasty parasite, which would have caused this particular Viking an upset tummy.
Check it out if you dare!