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| Interstate State Park in Wisconsin, on the Ice Age Trail. |
Liz Fajman has fallen, and she can't get out! |
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| Examing a swarm of "potholes" along the St. Croix River gorge. |
Explorers always obey the rules. |
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| Gooseberry River flows over Upper Falls into a deep pool below. |
Lower Falls offers spectacular evidence of glacial scouring. |
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| "Hoppy" Baker loves the Lower Falls. |
Explorers swim at the mouth of the Gooseberry River. |
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| Split Rock Lighthouse was built in 1910 to guide ships safely past. |
Anorthosite cliff edge scares Andrew Rotherham and Cody Sperl. |
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| Billion-year-old basaltic lava flows were later ground down by glaciers. |
Alicia "Ruth" DeGarmo thinks that Explorers Club really ROCKS! |