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Exploring lava tubes at Medicine Lake volcano

Exploring lava tubes at Medicine Lake volcano

If you didn’t know that volcanoes can form their own caves, follow along to learn more about lava tubes! 

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Medicine Lake Volcano part of newly-designated Sáttítla Highlands National Monument

Medicine Lake Volcano part of newly-designated Sáttítla Highlands National Monument

On January 7, 2025, the President announced the designation of the Sáttítla Highlands National Monument, a more than 200,000-acre area which...

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Examining early 20th-century reports of "activity" at Medicine Lake's Glass Mountain

Examining early 20th-century reports of "activity" at Medicine Lake's Glass Mountain

In the early days of volcanology in California, scientists were still working out the timelines of recent volcanic activity. Without today's...

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Fall into a burning (curtain) of fire with fissure eruptions

Fall into a burning (curtain) of fire with fissure eruptions

If you've been following the latest geological news, you'll have noticed the brand new eruption on Iceland's Reykjanes Peninsula. It's a classic...

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Which U.S. volcanoes pose a threat?

Which U.S. volcanoes pose a threat?

USGS Volcanic Threat Assessment updates the 2005 rankings.

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Geologic maps lay the foundation for this virtual tour of western states volcanoes.

Geologic maps lay the foundation for this virtual tour of western states volcanoes.

Take a virtual geologic tour in the USGS Geonarrative, Volcanic Landscapes.

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