close Wildfire Shuts Down Grand Canyon’s North Rim, Strangles Tourism in Arizona Utah Towns The Dragon Bravo Fire is now the largest wildfire burning in the United States and the biggest ever recorded in the Grand Canyon area, according to the National Interagency Fire Center. NEW You can now listen to Fox News articles! An 18-year-old hiker’s death on one of the Grand Canyon’s best-known trails is underscoring a frequent summer danger: Extreme heat can overwhelm even some of the healthiest