A rare and mysterious Roman artefact found in a Lincolnshire village went on public display for the first time in Lincoln.

The 12-sided dodecahedron was found by local volunteers during an archaeological dig at Norton Disney in the summer of 2023 and was one of the exhibits at Lincoln Museum's Festival of history.

It's one of only 33 dodecahedrons found in Britain - and nobody has yet figured out what they were used for.