A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park.

Wolf 1478F could have become the Junction Butte pack alpha, experts say.

Officials at Yellowstone National Park are shutting down rumors circulating on social media about wildlife leaving the park due to potential volcanic eruptions. Claims about animals leaving ...

Sitting on top of one of the world's largest super-volcanos are 3,500 square miles of the most spectacular American wilderness. National Geographic Channel opens this world to you live with a ...

Yes, you can visit the real Yellowstone ranch in Darby, Montana called the Chief Joseph Ranch. Yes the real Yellowstone ranch is actually called Chief Joseph Ranch — and you can book a stay! The ...