The Mount St. Helens eruption anniversary prompts investigation into the California earthquakes: eruption history, threat ...

Lassen Volcanic Center is in Lassen Volcanic National ... the eruption of Cinder Cone in 1666, and the Lassen Peak eruption from 1914 to 1917. According to USGS, heightened seismicity and ...

Another claim to fame is that Lassen Peak is the largest plug dome ... apparently these conditions are late stage volcanic activity. Since the last eruptions in 1916, Lassen was designated a ...

Over the Sierra crest — about 150 miles to the east of Manteca, Oakdale, and Turlock — is one of the world’s largest active ...

A restive volcano in central Philippines has briefly erupted, spewing a 2.8-mile ash plume and debris into the sky ...

If an eruption happens, it would likely occur at Crater Peak, shown in the background of this summit photograph. Over the past 12 months, an Alaskan volcano named Mount Spurr has become noticeably ...

The Philippine Institute of Volcanology and Seismology said a moderately explosive eruption ... volcano is one of the country’s 24 most active volcanoes. In 1996, three hikers were killed near ...

A volcano in central Philippines erupted on Tuesday, spewing a 4.5-kilometre (2.8-mile) ash plume and debris into the sky as its rumblings were heard nearby. The Philippine Institute of Volcanology ...