"(3) This is the cantilever bridge at the head of a long, long ravine, up which the railroad ran to gain altitutde. I imagine on the map this detour must look something like this: (hand diagram) with the further part of the loop hundreds of feet above the nearer - or thousand of feet. The two parts of the bridge were built perpendicular on the cliff wall, then lowered down & pinned together." A train is shown crossing a trestle bridge in a mountain gorge.
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