Rock Cairns (U.S. National Park Service)
Por um escritor misterioso
Descrição
Stacking rocks leaves nature in the balance
Rock cairns should not be messed with on trails: National Park Service
What The National Park Service Advises About This Common (And Controversial) Practice
Message in the rocks: Acadia's Bates cairns get new focus
Rangers, walking groups, urge public to stop making rock towers on hiking trails - ABC News
What are Rock Cairns & Why You Shouldn't Build Them – Bearfoot Theory
Why you shouldn't stack rocks in the wild - The Washington Post
What are Rock Cairns & Why You Shouldn't Build Them – Bearfoot Theory
Vandalism in Acadia taints popular mountains and trails - Acadia National Park on My Mind
Rock Cairns (U.S. National Park Service)
Push these over, say rangers at Yosemite National Park
What Are Cairns and Why Shouldn't You Make One? - CampEasy Iceland
When is it OK to stack rocks on the trail? - Adirondack Explorer
What Are Rock Cairns, And What Purpose Do They Serve - Terrain Magazine
Why You Shouldn't Stack Rocks On Hikes And What To Do If You See Them
