https://museum.unl.edu/ashfall/
Ashfall Fossil Beds | Nebraska State Museum | Nebraska
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https://roadtrippers.com/magazine/ashfall-fossil-beds-nebraska/
Nebraska's Pompeii: Exploring a prehistoric graveyard at Ashfall Fossil Beds State Historical Park...
Feb 11, 2020 - Twelve million years ago, a volcanic eruption caused the extinction of creatures that are now being preserved and displayed to the public