QT Yellowstone Caldera (the eruptions of which can be violent enough to send a layer of ash six feet deep as far away as Chicago and which erupts every 600,000 or so years and last erupted 640,000 years ago) update

The U.S. Geological Survey has done a special study of Yellowstone’s Norris Geyser Basin, where the ground had been rising for two years and then “abrupty switched to subsidence” in December before starting to rise again.
The deformations are now described as a “hiccup.”
No word on when to expect a sneeze.

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