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The “Rock in the Road” is a landmark in McLouth, Kansas. This large boulder of very hard, pink Sioux quartzite sits in the middle of the intersection of South Granite Street and East Lucy Street.
It was dragged by a glacier from distant outcrops in the upper Midwest and left behind as the ice melted thousands of years ago. This ancient glacial erratic is surrounded by asphalt because it was simpler to pave around the rock than move it.