In 1975, large swaths of ground were closed around the Mount Baker volcano, and people were told to leave the area due to the possibility that a volcanic eruption might occur. As people looked upwards, a towering plume of white volcanic gasses rose into the sky, having not existed a mere two days beforehand. From a great distance, people were able to smell traces of the rotten egg smell, correlating to hydrogen sulfide in this gas plume. And yet, Mount Baker did not erupt in 1975. So, what exactly happened that year? This video will discuss three possibilities.

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Sources/Citations:
[1] U.S. Geological Survey
[2] Werner, Cynthia & Evans, W.C. & Poland, M. & Tucker, D.S. & Doukas, Michael. (2009). Longterm changes in quiescent degassing at Mount Baker Volcano, Washington, USA; Evidence for a stalled intrusion in 1975 and connection to a deep magma source. Journal of Volcanology and Geothermal Research. 186. 379386. 10.1016/j.jvolgeores.2009.07.006.

0:00 The 1975 Incident
1:56 Carbon Dioxide
2:23 GeologyHub Theories
4:01 Opinion Scale