Wallow Fire Post Fire Images from Landsat (image) NASA/Goddard Space Flight Center Caption These two images are satellite-derived of the Wallow Fire, Arizona's largest fire to date, captured on June 23. The image on the left shows a post-fire image from Landsat 7. The image on the right derived from the dNBR data. The green colors indicate unburned or very lightly burned areas; red areas illustrate highly burned land. Credit US Forest Service, Remote Sensing Applications Center (RSAC) Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.