Evidently, Lassen Volcanic National Park is one of the few areas in the world where all four types of volcano can be found; plug dome, shield, cinder cone and strato. There were reports from 1850 to 1851 that fire and lava were spewed in the Cinder Cone area, however, geologist and volcanologists have concluded that the last Cinder Cone eruption occurred between 1675 and 1700.
More than likely, the 1850 - 1851 reports were sparked by copious amounts of firewater. I checked my calendar. I wasn't anywhere near the area in 1850 or 1851!