May 18, 1980 - Mt. St. Helen's erupted. Accuweather has a nice article on their site and on Twitter.
The Multiple photos are the last images Geologist David Johnston took before his death. He was 5 miles from the volcano.
He unloaded his film, placed them in a container, then inside his backpack and fell on the backpack to protect the images.
He died moments later. Incredible devotion to his work
https://www.accuweather.com/en/weather-news/last-moments-before-mount-st-helens-eruption-caught-on-camera/738277
Below, Twitter - Copy and Paste, could not be embedded, more images.
https://twitter.com/i/events/1526944754465918976?s=12&t=tYAsQvxWWO_S66QvBQohtQ