A horse-worked tramway, probably of 3ft. 6ins. gauge, built by the St Tudwals Iron Ore Co. from a mine at SH30042713 to a pier on St Tudwals Bay at SH32382666. The tramway was opened by 1846 and abandoned in 1885/6. The route is shown, devoid of track, on the OS 1/2500 map of 1888.
Ref: Boyd, J.I.C. Narrow Gauge Railways in North Caernarvonshire. Vol.1 The West. (The Bitish Narrow Gauge Railway No.5). Oxford 1981.