When is it OK to stack rocks on the trail? - Adirondack Explorer

When is it OK to stack rocks on the trail? - Adirondack Explorer

State History, New York State Parks and Historic Sites Blog

Friends of Hurricane Mountain

A Rock Cairn, Rocks Piled On Top Of Each Other, Marking A Hiking

Soil Data Explorer California Soil Resource Lab

Bay of Fundy: 5 Natural Wonders – Natalie the Explorer

Travel Writing — The Idea Geysir

A hike through history on Poke-O-Moonshine - Adirondack Explorer

America's favorite fall parks – Wondercide

Why you shouldn't stack rocks in the wild - The Washington Post