LUSAKA: Searching through a collection of lawn ornaments for sale, archaeologist and TV presenter James Balme stumbled upon a large, grey stone with unique carvings on it.
The carvings, on the other hand, are not so easily described, as Balme says that the pattern carved may be some form of writing, and was used as a keystone from an archway or indeed a vaulted ceiling.
In an effort to identify the use and exact date of the stone carving, Balme is seeking help to discover more about the stones mysteries using a new form of researchTwitter.
