Stacking rocks, also known as cairns, might seem like a harmless and fun way to leave your mark on a hike, but it can actually cause serious harm to the natural environment.
CATALYST PLANET - Why Creating Rock Cairns is Dangerous and Wildly Illegal
Where It's Illegal to Stack Rocks in New England
Press Release: Illinois DNR Grants Permit To Controversial Starved Rock Open Pit Mine - Prairie Rivers Network
PDF) Project-Based Field Trips to the Starved Rock Area for Geoscience Educators, Northern Illinois
Ellen Booth's Instagram, Twitter & Facebook on IDCrawl
Leave Stones Untouched: Why You Shouldn't Stack Rocks in the Wild
Lover's Leap Trail Leads To Incredible View Of Illinois Park
Why Stacking Rocks in Nature is Harmful at Illinois State Parks
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Rebecca Ashton's Instagram, Twitter & Facebook on IDCrawl
37 Matthiessen State Park Stock Photos, High-Res Pictures, and Images - Getty Images
5 Wives' Tales About Illinois Wildlife That You're Wrong About
These Impacts Are Stacking Up! - Leave No Trace
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