Even though you can see the far end of the tunnel you will definitely need a flashlight to see the surface of the trail. When we went through the tunnel …
The Elroy Commons is located at the junction of three popular bike trails: the Elroy-Sparta State Trail, the 400 State Trail, and the Omaha Trail. These trails offer miles of scenic biking through the Wisconsin countryside.
Very nice park, beside the water faucet, vault toilets and the pavilion there are about 3 miles of hiking and horseback riding trails. Camping is allowed but you need to reserve it with the county.