This post was originally published on this site
https://dims.apnews.com/dims4/default/d2a3803/2147483647/strip/true/crop/1200x675 0 63/resize/1440x810!/quality/90/?url=https://assets.apnews.com/[5/3,/ 26, -81, -26, 63, 88, -123, -16, 102, 66, -44, 67, -116, -109, 34, 29, -61, 78, 8, 0, 27, -18, -126, -91, -95, 119, 99, 22]/7a1f2176d7ca4c13a33faf8578225b7f
A surprise eruption of steam in a Yellowstone National Park geyser basin that sent people scrambling for safety as large rocks shot into the air has highlighted a little-known hazard that scientists hope to be able to predict someday.