About 10 years ago, my dad was lamenting that my brothers were too busy to go camping with him. I asked whether I was chopped liver, and that's the story of how my dad and I ended up camping one weekend in western Wisconsin.
It was a fun trip. My dad took care of all the meals and snacks, including bringing his own special trail mix (a jumbo bag of M&Ms). We went hiking, swimming, and biking. At the time, I had a heavy Raleigh uprightish hybrid thing - - the bike I got rid of as soon as I bought my road bike a few years later.
We raced on the Elroy-Sparta trail, the country's first rails-to-trails trail. Although my dad is competitive, he may have proposed the race just so we could have a little breathing room, since we were pretty much joined at the hip all weekend.
This was literally the case when we went in the train tunnel. Somewhere I have a photo of us standing in front of the tunnel, but this one from the Internet, celebrating the anniversary of the trail, will have to do for now.
There actually are three tunnels; two are 0.25 miles long, the third is 0.75. I think we must have gone in one of the shorter tunnels, considering we didn't go mad or suffer any injuries. We didn't take a flashlight as recommended. A short bit in, it was pretty difficult to see where we were going, but we could see a pinpoint of light (from the tunnel's mouth) behind us. Then it was entirely dark. Complete, claustrophobiaesque darkness that you can only appreciate if you've ever been in a cave or a mine. We talked the whole time, walking hip to hip, until we saw what actually was "the light at the [other] end of the tunnel." It was super freaky and super cool, and a fantastic life-long memory.
Thanks, brothers, for being busy that summer.
http://main.nationalmssociety.org/goto/MS150Maggie2016