If you are still wondering, the lava is from the Washington/Idaho border, long before Mt Rainier existed. Lots of info here from Nick Zentner at Central Washington U.
https://www.nickzentner.com
From 5 min PBS overviews to deep dives into geology.
John Altringham
npub1t9…2l0j5
2025-03-25 10:30:37 UTC
in reply to nevent1q…9vk2
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