The Culdee Fell Railway is a narrow gauge rack-and-pinion railway which climbs up the mountain of Culdee Fell. It connects with the North Western Railway at the terminus station at Kirk Machan, and has its own fleet of steam engines. It is the only rack railway of its kind on the Island of Sodor.

In the Railway Series, Lord Harry Barrane is the Chairman of the Board, while Mr. Walter Richards serves as the line's manager. In Thomas & Friends, Mr. Percival is the controller of the railway.

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