Lassen (or Lassen Peak) volcano in northern California is located at the southern end of the Cascade Range. Besides Mt St. Helens, it is the only volcano in the contiguous US that erupted in the 20th century.
Lassen's summit complex is a lava dome that rises 2,000 feet (610 m) above the surrounding terrain and has a volume of half a cubic mile, making it one of the largest lava domes on Earth. Its summit is a complex area of several craters.
Lassen Peak is the largest and youngest of a group of more than 30 volcanoes that have erupted in the Lassen Peak area over the past 300,000 years.
stratovolcano 3,189 m / 10,462 ft
California, USA (mainland exept Alaska), 40.49°N / -121.5°W
Location of recent earthquakesSE of Lassen volcano (USGS data)
A shallow magnitude 5.7 earthquake occurred Fri, 24 May at 04:58 UTC km WNW of Greenville, California, about 50 km SE of Lassen volcano. Hundreds of aftershocks, some of them felt, have occurred. It is unlikely that the earthquake has any relation with the volcano. The status of Lassen volcano remains therefore at green.
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