Arizona had a volcanic eruption 1,000 years ago, and the remnants are now a national monument that you can hike through for ...

Arizona might not be the first place you think of when it comes to volcanoes, but it actually has some of the most mysterious ones in the world! These ancient volcanoes, like the San Francisco Peaks, ...

Established in 1924, the Wupatki National Monument – part of a collective of Flagstaff Area National Monuments, including Sunset Crater Volcano and Walnut Canyon – is a nature and culture ...