Minneopa State Park is a great place to learn about the prairies that historically dominated much of this part of Minnesota. The tallgrass prairie of North America was once the largest continuous ecosystem on the continent. In the last 100 years, it has been drained, plowed, and built upon to such an extent that less than 1/10 of 1% remain today. Minneopa is a tiny piece of that remaining percentage. If you visit the park, you can learn more about prairies by visiting a prairie interpretive trail.
Prairie with Many Rocks
Dakota called the park’s prairie area Tinta-inya-ota or "prairie with many rocks." In this grassland area, a thin layer of soil covers the boulders and limestone bedrock. The presence of gopher mounds is a good indicator of where the soil is deepest. The large boulders, or "glacial erratics," scattered about the grassland area were transported and deposited here by glaciers over 15,000 years ago. These erratics were carried over a hundred miles from their bedrock source.