From the ever-active Kilauea in Hawaii to the infamous Mount St. Helens in Washington, the United States has some of Earth's most notable (and notorious) volcanoes. And despite their obvious dangers, ...

FLAGSTAFF — Just 30 minutes from downtown Flagstaff, Sunset Crater Volcano National Monument offers a striking look at northern Arizona’s explosive past. The cinder cone, now standing over 8,000 feet ...

WINSLOW, AZ (AZFamily) — An asteroid hit the Earth in what is now known as northern Arizona about 50,000 years ago. It left a giant crater that draws people from all over the world. Nestled between ...