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The Root River State Trail is a paved walking, bicycling, and cross-country skiing trail in southeastern Minnesota. Currently extending from the town of Fountain through Lanesboro, Rushford, and farther east towards Houston, the Root River portion is part of a planned network of trails throughout southeastern Minnesota that will eventually reach into Iowa and Wisconsin.

The trail is maintained by the Minnesota Department of Natural Resources, which operates a trail information center in Lanesboro. The Rushford Historical Society operates a trail rest area in Rushford.

This guide to the geology of the Root River State Trail was developed for the Fountain to Rushford segment, but the information will help you learn more about geology anywhere in southeastern Minnesota.

To get to the Root River State Trail from the Twin Cities, take US Highway 52 south to Rochester and Fountain. Alternatively, you can take U.S. Highway 61 south from the Twin Cities to Winona, and State Highway 43 from Winona to Rushford. Access to Houston and Rushford from the east is via State Highway 16, which parallels the trail between Houston and Lanesboro.

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Limestone of the Platteville Formation, near Stop 5.