I've heard stories about the logging tunnel through Pispala, but today I finally got an opportunity to go see it myself.
There's actually two tunnels, the first and the second one... and both were failures, as they were never properly used for their original purpose. The second one, the later and bigger tunnel is used today as a biking and walking path through the Pispala esker, making the access from one side of the hill to another much shorter and easier.
However, despite signs promising the tunnel is open daily, it was not open today. Fortunately, we found a way. There is, however, no way to get inside the first tunnel. We were able to find only the south end of the first tunnel, does anyone know where the north end is, or has it been buried?
Interestingly, when we got into the second tunnel, we realized there's a leak. Water spraying in an arc. Not much to cause a flood, but clearly there's water behind the walls wanting to get in.
Location: The first tunnel south end is at N 61.50579 E 23.69724. The second tunnel south end is at N 61.50607 E 23.69715 and the north end at N 61.50865 E 23.69796.
Entrance and exit and the second tunnel itself:
The first tunnel: