A travertine formation in the Grand Canyon, known as Pumpkin Springs, where hot arsenic waters created a pool next to the Colorado River. Grand Canyon National Park, Arizona
Grand Canyon National Park, Locust Point, looking at North Timp Point with pine covered north rim sloping toward a formation known as Steamboat Mtn. Arizona
De Motte Park meadow, Kaibab National Forest, flowering Sulfur Eriogonum, Eriogonum umbellatum, against a backdrop of aspen-fir forest. Arizona.
