Deep in the driftless hills of southwestern Wisconsin lies a railway corridor that has not carried a train since 1964, yet it remains one of the busiest routes in the region, only now the traffic moves on hooves, wings and two feet rather than steel wheels. The Elroy Sparta line once formed part of the Chicago and North Western Railway's main route linking Chicago with the Twin Cities, cutting through three hand-dug tunnels and past small farming towns along the way. When a more efficient bypass made the old route redundant, the railway slowly fell out of use before being abandoned altogether. What followed was a quiet transformation, as prairies, wetlands and forest crept back over the corridor, turning an old industrial route into a green passage for the wildlife that now calls it home. More than half a century after the last locomotive passed through, this quiet transformation stands as a striking reminder that abandoned human infrastructure, left undisturbed long enough, can gradually reclaim a genuine ecological purpose of its own.
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