Barely visible just left of the lightest patch of bricks in this picture, 5th course up from the ground, there is an OS cutmark that was originally levelled at 139.321m above Ordnance Datum Newlyn. The brickwork is that of a bridge which allowed a small canal to run under Crackshall Lane.
Uploaded to Geograph by Richard Law on 27 March 2016
Photo © Richard Law, 27 March 2016. Licensed for reuse under this Creative Commons licence