In recent history, Arizona once contained the tallest peak in the lower 48 US States. This peak was an active and towering volcano, which stood at 16,000 feet or 4,877 meters tall. This stratovolcano was covered with a glacier and was its impressive height as little as 400,000 years ago. So, what happened to this peak, and why is it seemingly not present in the modern skyline of Arizona? This video will discuss this massive volcano, and its implications for future volcanic activity near the town of Flagstaff.

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Thumbnail Photo Credit: Photo Credit: This work "TallVolPopo1", is a derivative of a photo (resized, cropped) from "Vista del Popocatépetl desde Puebla, 2012", by: Luis Alvaz, Luisalvaz, 2013, Posted on Wikimedia Commons, Wikipedia account link: https://commons.wikimedia.org/wiki/Us..., Photo link: https://commons.wikimedia.org/wiki/Fi..., CC BY SA 4.0. "TallVolPopo1" is used & licensed under CC BY SA 4.0 by    / geologyhub  

Cropped Luisalvaz, Wikipedia, CC SA 4.0, https://commons.wikimedia.org/wiki/Fi...

0:00 The Tallest Peak in the lower 48 States
0:24 A Towering Volcano in Arizona
0:58 San Francisco Mountain's Location
2:08 Geologic Setting

Google Earth imagery used in this video: ©Google & Data Providers

Creative Commons license used for this video's thumbnail image and NOT the entire video.
CC BY SA 4.0 license: https://creativecommons.org/licenses/...