In 1896 two proposed lines were put forward; they planned different routes. One would strike east following the valley of the Shinnel Water to connect with the G&SWR main line at Thornhill; this was the shortest path to the main line, but would involve challenging gradients. The second proposed to descend south-south-east with the Cairn Water and the Cluden Water to join the G&SWR a short distance north of Dumfries, near Holywood. While also having significant gradients this route would be more moderate, and involved easier civil engineering, and had the advantage of reaching close to the County Burgh.