Curtain Falls—Interstate State Park Professional Guide
Detailed Trail Description from our Guidebook
"Already bestowed a place next to a National Scenic Riverway, Interstate State Park is brimming with age-old remnants of Minnesota’s past. Full of holes, you might say. Near the river’s edge at the northern entrance to the park is a collection of glacial potholes—ancient pockmarks formed in a maelstrom of sand and water from the racing rapids of the Glacial St. Croix River. One of these punctures in the earth is the Bottomless Pit, the world’s deepest explored glacial pothole.
Others include The Cauldron, Bake Oven, Lily Pond, and Baby Potholes. A self-guided interpretive hike through these primordial perforations is a great start to a day at this unique park. To reach this Swiss cheese section, follow the River Trail 1.25 miles north, or park in the northern lot and reverse the track."