It may seem cool to stack rocks for fun or artistic purposes but moving rocks may inadvertently threaten small mammals and insects and contribute to soil erosion.
Rock Cairns (U.S. National Park Service)
Can Science Fiction Wake Us Up to Our Climate Reality?
Friends of the Enchantments
Trovants Are Stones That Seem to Grow, Move and Reproduce
Why you shouldn't stack rocks in the wild - The Washington Post
Please don't stack rocks on your next hike. Here's why. - Lonely Planet
Environmental Science, HowStuffWorks
Friends of Moosic Mountain (Dick and Nancy Eales Preserve)
Please don't stack rocks on your next hike. Here's why. - Lonely Planet