The New Zealand Railways Magazine, Volume 3, Issue 7 (November 1, 1928)
Looping the Loop at Raurimu
Looping the Loop at Raurimu.
With the ascent from the riverside to the tableland above Raurimu the traveller's interest is diverted to the highly skilful engineering work entailed in the construction of the line. In thirty miles run from the Taumarunui Flat the train climbs 2,160ft. to Waimarino (National Park) station. The steepest part is the range that rises immediately above Raurimu Station. To surmount this an ingenious spiral was designed; this was the work of Mr. Holmes, Inspecting Engineer of the Public Works Department (later Engineer-in-Chief). The line is run in an ascending spiral, a complete circle and two loops, with two tunnels. The fashion in which this mountain railway ties knots in itself is rather puzzling on first experience.