Much of this volcanic ash comes from the Great Basin, a geographic area within which the states of Utah and Nevada lie today.

If you're looking for the short answer: Yes, South Dakota would be greatly impacted if the Supervolcano at Yellowstone erupts ...

There is a such thing as old growth forest in South Dakota, and just how old this forest is will blow your mind.

This takes drivers from Minneapolis, north to North Dakota, and across through Montana. Finally travelers cross eastern Montana south to Yellowstone and optionally Grand Teton National Park.

The Yellowstone River is more than 600 miles long, traveling from south of Yellowstone to North Dakota's Missouri River. This makes it the longest undammed river in the continental U.S. Visitors ...