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.

Are you planning a Lassen Volcanic National Park itinerary? It was one of those moments when we realized, with embarrassment, that we’ve lived in California all these years and had never visited ...

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 ...

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 ...