The explosion could have resulted from a clogged passageway in the extensive natural plumbing network that underlies Yellowstone's world-famous geysers, hot springs and other thermal features, sa...
He said the explosion was “on the big side” of eruptions that occur periodically — usually when no one is around let alone throngs of tourists. On occasion they get much bigger: The largest known crat...
“What we saw today was spectacular and definitely hazardous. But on the scale of what the Yellowstone system has done in the past, it was relatively small,” he said. “It’s a very good reminder of an u...
Similar blasts have happened in Biscuit Basin in 2009, 1991 and after the magnitude 7.2 Hebgen Lake earthquake 40 miles (64 kilometers) away in 1959.Yellowstone is centered on a huge, dormant volcano....