Yellowstone Caldera

Yellowstone Caldera

Yellowstone Caldera

Yellowstone is in the mountains, but is not particularly mountainous, because it comprises mostly a caldera. If I had once known that term, I had forgotten it, but my thirteen year old knew it from last year’s Runkle Geography course (see here).

In the map below, you can see the ring where the caldera is in Yellowstone. Yellowstone was once an enormous mountain and long, long ago, it’s top was blown off scattering ash over most of North America. The caldera marks the spot where the lava erupted, and now after all these years it is a sunken valley with hills at the perimeter, still very close in touch with the thermal activity of it’s past. So here are some pictures of the Yellowstone Caldera activity; it’s so odd to be standing where a whole mountaintop was forcibly removed.

Yellowstone_map IMG_2337 IMG_2340 IMG_2394 IMG_2359 IMG_2382 IMG_2388IMG_2511 IMG_2509 IMG_2538 IMG_2533 IMG_2703 IMG_2771 IMG_2775 IMG_2798 IMG_3325 IMG_2841 IMG_3326 IMG_2846

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