Photo of a hiker watching the eruption of Mt. St. Helens from Mt. Adams, about 37 miles to the east.

Photo from Mt Adams by John V. Christiansen around 8:32 am local time on May 18, 1980 & published in a 1981 National Geographic magazine. https://old.reddit.com/r/AlternateAngles/comments/bzvxin/photo_of_a_hiker_watching_the_eruption_of_mt_st/

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