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https://bouldercountyopenspace.org/i/wp-content/uploads/2014/05/switzerland-railroad.jpg598482The Switzerland Trail wound its way up the steep and narrow canyons connecting mountain towns. The narrow gauge railroad made mining possible and profitable and eased the isolation of many mountain communities. In 1881, railroad fever ran high in Boulder, Colorado, when the Union Pacific announced it would build a narrow gauge railroad up Boulder […]