Firefighters in Arizona were trying to contain a pair of fast-moving wildfires that destroyed a historic lodge in Grand Canyon National Park, closed a section of the park for the rest of the season and prompted calls for an investigation into federal authorities' wildfire response.

The Grand Canyon Lodge on the North Rim was destroyed by the Dragon Bravo wildfire, which began with a lightning strike on July 4 and spread rapidly due to high winds.

The lodge itself told a key part of history for both the Grand Canyon and the National Park Service.