Didinsky Tunnel, Railway tunnel in Sverdlovsk Oblast, Russia
The stone tunnel stretches 1123 meters through the Ural mountains with portal entrances designed in the shape of castle walls and turrets.
Construction started in 1914 with local villagers and World War I prisoners, leading to the first train passage through the tunnel in 1918.
The tunnel became a crucial transportation route during the Russian Civil War, allowing Kolchak's military trains to travel towards Siberia.
Winter visits provide better access as groundwater freezes, forming thick ice formations on the tunnel ceiling and floor.
The tunnel contains an intricate drainage system with wells and underground passages, including a 500-meter drainage tunnel and a 200-meter ventilation shaft.
Official opening: 1918
Length: 1,123.7 m
GPS coordinates: 56.81873,59.69683
Latest update: May 13, 2025 16:00
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