Announcement
Yellowstone volcano update reportedly shows a small hydrothermal explosion in Biscuit Basin
USGS Volcanoes says the video explains why Yellowstone's common rotten-egg smell is a good thing for volcano monitoring.
TLDR
USGS Volcanoes describes a Yellowstone Volcano Observatory video update about why the park's common rotten-egg smell is a good thing for volcano monitoring. It says the video also shows geysers and hot springs, including a small hydrothermal explosion in Biscuit Basin on the night of September 27, 2026.
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