Clachnaharry footbridge and vapour trail

This is not to imply that the Clachnaharry footbridge leaves a vapour trail. The bridge is firmly anchored to the bedrock, it cannot move, therefore it cannot create a vapour trail. Those pesky Martians must be at it again!

Note: I've just had my first pint of Jarl in a week. I think they must be brewing it stronger than usual.