This town tucked high in the Chiricahua Mountains is surrounded by towering cliffs and lush forests. Here's how to plan a ...

It is often called “Arizona’s Yosemite” due to the high ramparts rising above the canyon floor. The rhyolite cliffs were formed by ash and magma deposits from volcanic events dating back ...

But it contains the largest mountain range on earth, canyons far grander than the Grand Canyon and towering vertical cliffs rising up three miles—more than twice the height of Yosemite’s ...

For decades, scientists knew magma was simmering beneath the earth at Yellowstone National Park. A team of researchers ...

Scientists have discovered a giant 'magma cap' under Yellowstone National Park. The cap is likely playing a critical role in ...

Federal authorities are investigating after a woman died after she was found with severe injuries at Yosemite National Park last week, according to the National Park Service. "NPS is investigating ...