Dubbed the Bloody Pit by the workers who made her, The Hoosac tunnel is the most haunted tunnel in New England. It's ghosts have allegedly attacked hunters, protected workers, even committed murder.

The Signal Man :https://www.youtube.com/watch?v=uL-2IrYOiG8

The tunnel carver example : https://www.stolenhistory.org/threads/1846-tunnel-boring-machines-frederick-beaumont-second-industrial-revolution.630/