Long-quiet volcanoes in the Cascades region of the Pacific Northwest are still underpinned by large reservoirs of magma, new ...

Eruptions of steam, ash, and tephra continued until June 1917, when the volcano resumed its quiet profile, with minor steam clouds occasionally reported. Since 1921, Lassen Peak has remained quiet.

Beneath dormant volcanoes in the Cascades region of the Pacific Northwest, scientists found large reservoirs of magma. The discovery challenges […] ...

An increase in seismic activity has prompted predictions that a mile-wide submarine volcano named the Axial Seamount will ...

It appears that these magma bodies exist beneath volcanoes over their whole lifetime, not just during an active state.' ...

Tucked away in far northeastern California, Lassen offers sweeping grandeur and hydrothermal ... naturally dark skies. The park's namesake peak is the one of the largest plug dome volcanoes in the ...

Its namesake feature, the 10,457-foot Lassen Peak, is one of the world's largest ... State Park owes much of its existence to volcanic eruptions millions of years ago. The park boundaries contain ...