A caldera—like the one at Yellowstone Park spanning parts of Wyoming, Idaho and Montana—is a large depression or hollow formed when a volcano erupts and the magma chamber beneath it empties, leading ...

Tens of thousands of hidden earthquakes were recently discovered beneath the Yellowstone volcano by a group of international ...

Maps about Yellowstone tend to grab attention fast, so most people skim them and move on, which means the real story often gets missed. Yellowstone sits under a national park people associate with ...