This was the second time I'd visited the old train tunnel in the woods. the first time was in Summer and it was very different and much cooler, and wetter in Fall. Water dripped from the ceiling from melting snow, and formed in pools that became very deep at the terminus. The vista at the end is memorable, if impassable due to the arches formed in duplicate by the distant train bridge. Now over 100 years old, the 1,000 plus foot tunnel was once part of a giant bridge spanning the nearby large dam which had required the tunnel's creation after nearby communities were flooded and train track rerouted to cross the new waterways. Small collapses have begun inside and it's not hard to envision the tunnel becoming blocked at some near stage of the future.