The high peaks of the Rocky Mountains are covered with snow long before the surrounding lowlands. By December 19, 2004, early snow storms had brought a dusting of white to Wyoming, Utah, Colorado, Arizona, and New Mexico. The Colorado River is fed by mountain snow in Colorado, shown in the center of the image. The river itself can be seen winding across the pink deserts of the southeast corner of Utah and into northern Arizona where it cut the Grand Canyon. The Moderate Resolution Imaging Spectroradiometer (<a href="http://modis.gsfc.nasa.gov">MODIS</a>) flying aboard NASA’s <a href="http://terra.nasa.gov/">Terra</a> satellite took this true-color image. Sensor: Terra/MODIS. Data Start Date: 12/19/04.