The 1980 eruption cycle made Mount St. Helens one of the most famous volcanoes in the Cascades. But it is far from the only ...

Mount Lassen, in the southern Cascades, erupted on May 22, 1915, 65 years almost to the day before Mount St. Helens. Also known as Lassen Peak, the mountain is the southernmost active volcano in ...

Here’s a look at volcanoes ... been the most active volcano in the Cascade Range. Volcano type: Stratovolcano Most recent eruption: 1980, 2004-2008 The map below shows all where volcanoes ...

The USGS reported in 2023 that Mount St. Helens is the volcano in the Cascade Range that is "most likely to erupt again in our lifetimes," but the exact timing can't be predicted so far in advance.

Mount St. Helens was formed during four eruptive stages beginning about 275,000 years ago and has been the most active volcano in the Cascade Range. The map below shows all where volcanoes are ...