Why Do People Stack Rocks Along Colorado Trails?

Why do people stack rocks along Western Colorado trails? Here's what Colorado residents say via social media.

1,111 Man Made Rock Stack Images, Stock Photos, 3D objects, & Vectors

Please don't stack rocks on your next hike. Here's why. - Lonely Planet

The Art (and Fun) of Stacking Rocks

Maine author explains why people are compelled to stack rocks

These Impacts Are Stacking Up! - Leave No Trace

Here's why you should quit stacking rocks in natural spots

Stacked Rocks Meaning: What Stacked Stones On A Trail Mean

What is it with all the Stacked Rocks? – Julie Powell – Photographer & Graphic Artist

Balancing Act: The History of Rock Cairns and Why Stacking Rocks is Discouraged in Zion

Why do people stack stones in the wild?