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News about Crater Lake.

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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First earthquakes recorded at Crater Lake by new monitoring network.

First earthquakes recorded at Crater Lake by new monitoring network.

Three small earthquakes are the first to be recorded after installation of a small seismic and geodetic network at Crater Lake in 2011.

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