rathole tunnel

rathole tunnel
a railway tunnel prone to excess fumes, generally because of a combination of straining locomotives and poor ventilation.

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  • Lapstone Zig Zag — The Lapstone Zig Zag [ The Ascents of Lapstone Hill Singleton, C.C. Australian Railway Historical Society Bulletin, September, 1956 pp117 131] was a zig zag railway built near Lapstone on the Great Western Railway of New South Wales in Australia… …   Wikipedia

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