In the early 1840s, work began on creating a railway tunnel to forge a link between Canal Street Station - now known as Waverley Station, with the north of Edinburgh.
This involved driving a substantial tunnel from Canonmills, which ran underneath Scotland Street, Dublin Street, and St Andrew Square. Costing over £100,000, the tunnel was officially opened on May 17, 1847.
Passenger trains travelled between Waverley and Granton, hauled by a steel rope and winding engine - required due to the sharp incline.
