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Eruption decapitates St. Helens': The 40th anniversary of the day Mount St. Helens blew her top - pennlive.com
![Mount St. Helens on Twitter: "Johnston Ridge Observatory opens for the season next Wednesday, 5/16! In the meantime, enjoy this morning view from the #MtStHelens Volcano Cam. https://t.co/87MLSbAMHz" / Twitter Mount St. Helens on Twitter: "Johnston Ridge Observatory opens for the season next Wednesday, 5/16! In the meantime, enjoy this morning view from the #MtStHelens Volcano Cam. https://t.co/87MLSbAMHz" / Twitter](https://pbs.twimg.com/media/Dcrtv4cXcAEFojm.jpg:large)
Mount St. Helens on Twitter: "Johnston Ridge Observatory opens for the season next Wednesday, 5/16! In the meantime, enjoy this morning view from the #MtStHelens Volcano Cam. https://t.co/87MLSbAMHz" / Twitter
![A Landscape Changed In An Instant Keeps Evolving, 40 Years After Mount St. Helens Blew - Northwest Public Broadcasting A Landscape Changed In An Instant Keeps Evolving, 40 Years After Mount St. Helens Blew - Northwest Public Broadcasting](https://www.nwpb.org/wp-content/uploads/2020/05/MT_ST_HELENS_PLUME-1140x620.jpg)