The group’s Mike Browne, left, was joined by Iain Rennick, from Scottish Natural Heritage, to examine a piece of Caithness flagstone and the panel in the Canongate wall which is made from it.
The pair were there to mark the launch of a new Scottish Natural Heritage funded leaflet about the stones in the Canongate Wall – telling the story behind its construction, where its rocks came from and the inscriptions that decorate them.