What Was the Biggest Volcanic Eruption in United States?

A view of Aniakchak in Alaska from above, taken by Roy Wood, USGS. Credit: NPS The United States is a volcanic country. Sure, a large swath of it east of the Rocky Mountains haven’t had an eruptions of tens to hundreds of millions years, but the western US, Alaska and Hawai’i are all full of active or potentially active volcanoes. This got me wondering what are the biggest eruptions the US has experienced and that led me down a rabbit hole considering what that question actually means.

So, I present you with the largest eruptions in the US over the […]

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By Donato