Arizona's Wallow Fire (IMAGE) University of Arizona Caption Arizona’s Wallow Fire, the largest in Arizona’s history, started on May 29, 2011, and was finally declared 100 percent contained on July 8, 2011. The forest fire, pictured here, burned more than 538,000 acres in northeastern Arizona and northwestern New Mexico. Credit U.S. Forest Service, Apache Sitgreaves National Forest. Usage Restrictions None License Licensed content 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.