Edge of Fire: Hiking, Waterfalls and Geologic Drama at the Grand Canyon of the Yellowstone

By the time the first light finds the rim the canyon is already awake. Mist rises from the Yellowstone River, a pale shawl over the dark water, and the Lower Falls—308 feet of white thunder—seems to inhale before it exhales again. A breeze combs through lodgepole pines and carries the faint sulfur-smell of the park’s hydrothermal heart. Walk close to the edge at Artist Point and the canyon’s walls light up: ochre, rust and sunflower yellow streak the broken rhyolite like weathered paint. It’s easy to feel the place is alive in both a geological and a conversational sense, as if the rock remembers every eruption, every glacier, every river’s passage.