Why Is Interstate Park Minnesota's Deadliest Gorge?
🕐 7 min read | 🌍 Natural Wonders 🔒 Key Takeaways Interstate Park's gorge walls soar 200 feet high, carved by glacial meltwater torrents traveling 100× faster than today's river over just 12,000 years. The St. Croix River's current velocity reaches 8–15 mph through the gorge with water temperatures of 40–50°F year-round, triggering cold-water shock within minutes. Exposed Precambrian basalt bedrock at Interstate Park dates 1.1 billion years old—some of North America's oldest visible volcanic rock from the Midcontinent Rift System. At least 15 documented deaths occurred at Interstate Park since 1960, with 90% of incidents involving cliff jumps, swimming, or barrier violations despite warning signs. Minnesota's Interstate Park gorge harbors one of the Midwest's deadliest geological secrets: a 200-foot chasm carved by ancient glacial fury where swift currents and freezing water claim lives despite its stunning beauty. What makes this Interstate Park...