Author

Robert Thomas

Robert Thomas

Not all ash falls from the sky

By: - December 17, 2021

Volcanism in the Yellowstone region has generated a lot of ash over the last several million years.  Rivers, including the ancestral Missouri River, have played an important role in distributing this ash across the landscape of southwestern Montana. When we think of the Yellowstone hotspot, we commonly think of the volcanic scars left behind as the […]