In this undated composite image released by NASA, Death Valley, Calif. , is shown in an image made by combining images from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) simulated natural color image and the digital topography from the ASTER Global Digital Elevation Model (GDEM) data set. It is the driest and hottest location in North America. The region is characterized by deep valleys and high mountain ranges, located in the large Basin and Range province of the western United States. Furnace Creek ranch in the right foreground is the only place on the valley floor where vegetation grows year-round.