America’s first major rock tunnel, this 4.75-mile, active railroad passageway in the Northern Berkshires has been dubbed the “Bloody Pit” after the roughly 180 workers who died over its 24-year construction, from 1851 to 1875. One disturbing accident involved an explosion of a 1,000-foot central exhaust shaft, which caused 13 miners to be buried alive and perish. Legend has it, you can still hear their moans. Note: This is still an active freight route, so walking on the tracks is strictly prohibited when you visit.
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