For almost a year now I’ve travelled by bus, car, underground and on foot, cataloguing the oddest corners of Glasgow. I’ve climbed barbed wire fences, walked along the edges of motorways, staggered up hills with my camera kit and sheltered from the rain in more cemeteries than I care to remember. I’ve walked around housing schemes, visited parks and shopping malls, peed on sacred ground, in fields and in woods. I’ve set up my camera in places where murders...

Out of the blue, last summer brought an email from a man claiming to own half of the Cochno Stone, the most elusive of all the places mentioned by Harry Bell in his Gazetteer of Sites. My search for the Cochno, or Druid Stone, features in an earlier blog. The stone, arguably the most significant cup-and-ring marked stone in existence, became something of a lost cause for me.

Measuring 55 by 35...