Fumaroles on Mount Griggs @KatmaiNationalParkandPreserve
Fumaroles on Mount Griggs  @KatmaiNationalParkandPreserve
Uploaded November 2015 | Updated September 2026, 1 hour ago
“It was as though all the steam engines in the world, assembled together, had popped their safety valves at once and were letting off surplus steam in concert.”

That’s how Robert Griggs described the sight and sound of the Valley of Ten Thousand Smokes in 1916. A fumarole field high on the slopes of Mount Griggs can help us further imagine the sound of the Valley of Ten Thousand Smokes when it was discovered in 1916. Imagine thousands of fumaroles like these—many of them much, much larger—spewing gas out of the earth. (Turn your sound on for this video.)
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Katmai National Park and Preserve |

Fumaroles on Mount Griggs

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