The Wrights Station Tunnel, located about 100 yards away from the parking spot for the hike. Supposedly there was a collapse during construction, killing many Chinese labourers. Rumor has it that the ghosts of the labourers still haunt the entrance and the interior of the tunnel. You can walk into the tunnel for about 100 feet until a wall of dirt stops you.
Sorry about the so-so quality, I had to lighten the hell out of this pic.