The Hoosac Tunnel in North Adams, MA, is known as the "Bloody Pit" due to numerous fatalities during its construction and is associated with a haunted reputation, featuring reports of ghost sightings, disembodied voices, moans, apparitions of spectral figures, strange lights, and unexplained sounds. Specific claims include lost miners carrying tools, a headless figure appearing and vanishing, and instances where voices warned people of danger, saving them from accidents. The tunnel's construction, from 1851 to 1875, was extremely dangerous, resulting in many deaths from explosions, falling debris, and other accidents. A major incident occurred in 1867 when an explosion at the central shaft killed many men, leading to reports of their spirits appearing. People have reported seeing spectral figures, sometimes described as headless, near the central shaft or other parts of the tunnel. Reports include hearing moans, groans, wails, and voices, sometimes shouting warnings to run. There are accounts of workers disappearing without a trace during construction. Blue lights have been seen near the central shaft, with one report describing a floating, headless human figure associated with a drop in temperature. One man, Joseph Impo, claimed to have been saved from an oncoming train by a voice shouting "Run Joe run" and from electrocution by a voice saying "Joe joe drop it Joe". The Hoosac Tunnel is still an active, operating train tunnel for freight trains.