THE OASIS IN THE ARIZONA DESERT

Flips from 40 ft high and a day through Arizona's hidden wonder... Fossil Creek

Fossil Springs, near the headwaters, emits upwards of 20,000 US gallons (76 m3) per minute that flow into the creek year-round. Calcium carbonate, precipitating from the 72 °F (22 °C) water from the springs, creates travertine dams and deposits for several miles downstream. The Fossil Creek system is the fourth largest producer of travertine in the United States.

Fossil Creek is one of only two streams in Arizona included in the National Wild and Scenic Rivers System. The creek and its riparian corridor provide habitat for a wide variety of flora and fauna, some listed as endangered or otherwise imperiled. Its former power-plant complex is listed as a National Historic District.