Fossil Creek is one of two Wild and Scenic rivers in Arizona. Its 70 degree F water pours at 20,000 gallons per hour from springs at the bottom of a 1,600 foot deep canyon. Over the years these calcium rich waters have laid down huge deposits of a material called travertine. That rock-like substance encases whatever happens to fall into the streambed - forming the fossil-like formations for which the area is named
