The Spiral Tunnels open and the Big Hill is retired

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After three years' work, two looped tunnels bored into the valley walls at Kicking Horse Pass — one under Cathedral Mountain, one through Mount Ogden — lengthen the line enough to bring the ruling grade down from about 4.5 per cent to 2.2. The Big Hill had been worked for a quarter of a century with runaway spurs and helper engines. The tunnels are the moment a railway pays, retrospectively, for the survey it declined to do in 1884.

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