The above photo was taken on a walk along the banks of the River Clyde in Glasgow, heading west from the city towards the Science Centre. I first noticed the white vapour trail from the jet plane that seemed to stand out so well against that deep blue sky. At the time I was walking past a building that was probably some type of warehouse, factory or car park, but the red metal beam along the top really stood out. When I thought that the plane was in the right position I captured the above picture.