A lot of people that live the Baystate are unaware of this abandoned railroad tunnel located in Clinton, Massachusetts. According to onlyinyourstate.com, this tunnel is hidden in the forest bordering the Wachusett Dam and has since been abandoned by the state. Even though the tunnel itself itself is only about a quarter-mile long, the soaring ceiling, walls that are made of huge stone blocks, and utter darkness makes it feel quite a bit longer. Tripping water can also be heard as well like any other tunnel.