This story appears in the August 2009 issue of National Geographic magazine. Update: Our new Yellowstone National Park stories ... ejecting more than 1,000 cubic kilometers (240 cubic miles ...

Yellowstone National Park isn't just a park; it's a sprawling wilderness encompassing around 8,991 square kilometers (3,468 .

The best way to get around Yellowstone National Park is by car; there is no public transportation system in the park. You can rent a car at any of the nearby airports, including Yellowstone ...

Beneath the steaming geysers and bubbling mud pots of Yellowstone National Park lies one of the world's most closely watched volcanic systems. Now a team of geoscientists has uncovered new evidence ...