Earlier this year, I visited the rock art site at Cairnbaan, in western Scotland, accompanied by television presenter Paul Murton and a film crew.
Above: The star of the show. The cup and ring markings at Cairnbaan, above Kilmartin Glen.
After introducing the site to Paul, and admiring the view across Kilmartin Glen, we talked about the possible interpretations of the abstract carvings. They date to the Neolithic or Early Bronze Age, and there have been over a hundred different suggestions for what they might mean.
Above: Discussing the mysteries of rock art with Paul Murton.
The first episode of Grand Tours of Scotland's Lochs was broadcast this week on BBC HD and BBC Scotland, and is available for 29 days on the BBC’s iPlayer if you have a TV license within the UK. Please click on the following link to visit the iPlayer website: