She was written out of Grand Canyon history, but fires are putting her iconic buildings at risk. Meet Mary Colter, the architect you've never heard of.

A new study suggests ancient wood floated into a cave far above the Colorado River when a meteorite-induced earthquake triggered a landslide, a dam, and an ancient lake.

Jamie Coffin recalls being one of several people flown out of the Grand Canyon because of a chlorine gas leak.

A wildfire that tore through a historic Grand Canyon Lodge​ had been allowed to burn for days before erupting over the weekend, raising questions about federal officials' decision not to aggressively attack it right away.

A wildfire that destroyed a historic Grand Canyon lodge is continuing to spread out of control after it had been allowed to burn for days.

A new report has calculated that making national parks the responsibility of states would raise costs, cut revenue and reduce access for Arizonans.

"Though it was definitely not your average vacation trip, everything worked out okay. We made the best of it," Russ Christian said.

The National Park Service is pushing back against members of Congress who accused the agency of allowing the Dragon Bravo Fire to spin out of control on the Grand Canyon’s North Rim.

The Dragon Bravo Fire started on July 4 and was managed at first as a controlled burn. Then the wind picked up, and it quickly became uncontrollable.