In the heart Wisconsin’s Driftless Area, Norwalk is known as the Gateway to the Tunnels, once for railroad tunnels for the Chicago and North Western Railway and now as part of the Elroy-Sparta State Trail. For a neat, interactive map of the Elroy-Sparta Trail, complete with more history, check out this story map from Wisconsin Department of Natural Resources: http://ow.ly/VRKC30rsa6F.
Images are from Norwalk Public Library.
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