At some point it was knocked over and broken, possibly in a storm, and the bottom portion was lost. It is also believed to have been vandalised more than once during the time of the Reformation in the 16th century.
In 1676 the original carving of the Christian cross was chipped off and replaced with an inscription commemorating a local man, Alexander Duff, and his three wives.
Recent excavations of the chapel site uncovered the upright base in the ground and more than 3,000 scattered fragments of the face of a cross.
So each of the fragments has been scanned and digitised, and a new website has launched today that invites members of the public to help put the pieces together. Go to pictishpuzzle.co.uk and have a go! It seems pretty simple to use, but I think it's safe to say you need to be really good at jigsaws to get anywhere with it...It's kind of addictive, though, even if I'm terrible at jigsaws.