Yellowstone National Park's nearly 3,500 square miles seep slightly across state borders into Montana and Idaho, but its major attractions are contained in the northwest corner of Wyoming.

Brush up on your knowledge of Yellowstone's geography with this interactive version of National Geographic's Trails Illustrated map Yellowstone National Park MapPlanning a Yellowstone trip?

Yellowstone National Park is a popular destination for geology field trips. It’s easy to see why—the dynamic landscape ...

Of all the beautiful places across America, Yellowstone ... the decision to create a national park instead of a state park, as initially envisioned. “Because the boundaries of the parks were ...

Grant signed the bill creating Yellowstone Park, the first national park in the history ... for the elk and buffalo by conforming the park's boundaries to their seasonal migrations.