This geological map of Yellowstone National Park was based on work by William Henry Holmes in 1878 as part of Ferdinand Vandeveer Hayden’s United States Geological and Geographical Survey of the ...

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. The ...

Now a protected area covering about 3,500 square miles, Yellowstone National Park sits atop a volcanic hotspot that has become a massive source of intrigue for geologists, even though the chance ...

In the 1970s, Ken Pierce, Gerald Richmond, and Henry Waldrop published 18 surficial geologic maps at 1:62,500 scale that cover Yellowstone National Park. These maps were an enormous undertaking ...

Social media users claim Yellowstone National Park has been closed due to an impending natural disaster. “Yellowstone officials just closed up the park and said the volcanic uplift is rising ...

As Yellowstone National Park interpretive specialist Richard Jehle told me earlier this year, “Old Faithful is just a tiny fraction of what Yellowstone National Park is all about.” I got to ...

Portions of the main roads in Yellowstone National Park are opened to cyclists before cars each spring. The dotted blue line in the upper left portion of the map traces the approximate route ...

Yellowstone consists of 310 miles of paved roads that make getting around fairly easy. Roads often close for snowfall and construction, so it's best to check advisories posted on the National Park ...