Shannonvale, West Co.Cork, is a small village located near the former Cork Bandon & South Coast Railway's Clonakilty branch line, which was opened by the West Cork Railway in August 1886. The principal industry at Shannonvale was flour, and this is where the Cork Milling Company established a large flourmill in the mid 19th century. In March 1887, one year after the Clonakilty branch was opened, a ½ mile siding/branch was constructed from the flourmill to connect with the branch line just north of the Argideen Viaduct. Operated as a private siding, it terminated in a covered shed served by a platform adjacent to the mill, where the flour was transferred onto railway wagons for onward transit. The siding was uniquely horse operated, and the wagons would be collected by the Clonakilty branch train at the junction. The Shannonvale siding was closed in March 1961, along with the rest of the West Cork railways by CIE. Today the siding trackbed to the mill remains, the buildings themselves now in use as a poultry produce factory. Only one abutment of the nearby Argideen Viaduct remains in situ.