This narrow-gauge railway, known locally as the Grouse Moor line, was built for the transport of grouse-shooting parties and their equipment by Sir James Lithgow, 1st Baronet, of shipbuilding fame.
The line started at Hardridge Farm, where the engines and passenger carriages were kept, and had three branches – one northwards to the Laverock Stone, another westwards to the Laird's Seat and the third southwards to Smeath Hill.
[2] Two 20 hp (15 kW) wheeled, 2 ft (610 mm) narrow-gauge petrol-driven locomotives were purchased in 1922 from the Motor Rail & Tramcar Company of Bedford – Works Numbers 2097 and 2171.
[3] In September 1969 a further four-wheeled 20/28 HP diesel locomotive (Works No 8700 of 1941) was purchased second-hand from Joseph Arnold Ltd's sand quarries in Leighton Buzzard.
The engine shed is still present (2021), as are parts of the station platform and many of the rails are still in situ; most, however, are buried in the peat.