More than four dozen U.S. national park workers in Arizona have been fired amid the Trump administration's purge of federal ...

The Trump administration plans to shutter two National Park Service offices in Flagstaff later this year as part of ...

Around 900 years ago, a volcano – which has come to be called Sunset Crater – erupted and transformed the encircling area. Geologic features like cinders, lava rock and lava flow compose this ...

Hike up the Lenox Crater at Sunset Crater Volcano National Monument and explore dramatic volcanic formations in Arizona, ...