USGS Issues RED ALERT After Satellite Detects Magma Tunnels Connecting Rainier to St. Helens & Hood

Discover Tube
Discover Tube
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Nov 13, 2026  #unitedstates

What is happening deep beneath the Cascade volcanoes? From Mount Rainier and Mount St. Helens to Mount Hood, scientists are investigating the powerful geological forces that continue shaping the Pacific Northwest.

In this DiscoverTube investigation, we explore the volcanic systems beneath three of America's most dangerous volcanoes, including underground magma reservoirs, seismic activity, volcanic gas emissions, and advanced satellite monitoring. Discover how USGS researchers study the Cascadia Subduction Zone, track signs of volcanic unrest, and investigate the hidden geological structures beneath the Cascade Range.

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