After Finch published his work in 1937 , few additional studies were done on volcanic hazards in the Lassen area . However , that changed after the 1980 eruption of Mount St. Helens in Washington . As a result , the USGS began reevaluating the risks posed by other potentially active volcanoes in the Cascade Range , including those in Lassen Volcanic National Park . Since that time , USGS scientists have been working in cooperation with the National Park Service to better understand volcanic hazards in the Lassen area . As part of this work , the history of Cinder Cone has been reexamined . Most of the features of Cinder Cone have changed little since Harkness first described them in the 1870s , but all of the assumptions on which Finch based his conclusions have now been shown to be incorrect
1980 eruption of Mount St. Helens
1980 eruption of Mount St. Helens
Cinder Cone and the Fantastic Lava Beds