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.

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

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

Tucked away in far northeastern California, Lassen offers sweeping ... The park is home to more than 40 volcanoes, bubbling mudpots, steaming fumaroles, stunning mountain views and vast, naturally ...

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

The 2009 eruption of Sarychev Peak Volcano, Kuril Islands, viewed from the International Space ... [+] Station. A new study says that a similar eruption was behind a cooling event with worldwide ...

Overflowing with otherworldly landscapes, boiling hot springs, and more than 20 volcanoes, Lassen Volcanic National Park is a unique park that still has yet to break through on the radar of the ...