Camels, lions, and mammoths once roamed the landscape around Las Vegas, Nevada. Such was the case during the latter part of the Pleistocene era, which spanned a period of time between 11,000 years and 2.5 million years ago. The area -- known as the Upper Las Vegas Wash –- is rich with the fossils of these and many more creatures as well as ancient plants and pollens. This trove of fossils is preserved within Tule Springs Fossil Beds National Monument. Lynn Riddick talks with Tule Springs Superintendent Derek Carter to learn about the treasures contained in the monument.