Raurimu Spiral, Railway spiral in Ruapehu District, New Zealand.
This single-track railway spiral includes two tunnels, a complete circle, and three hairpin bends to overcome a 139-meter elevation difference.
Engineers completed the construction in 1908 as part of the North Island Main Trunk railway line between Wellington and Auckland.
The spiral represents New Zealand engineering excellence and holds Heritage New Zealand Category 1 status for its technical significance.
Trains navigate the steep terrain through a series of curves with a gradient of 1 in 52, eliminating the need for extensive tunneling.
The railway formation creates a complete spiral using natural land contours instead of requiring multiple viaducts or long mountain tunnels.
Location: Ruapehu District
GPS coordinates: -39.11947,175.40205
Latest update: May 12, 2025 16:54
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