From oozing lava rivers to giant explosions and ash clouds that won't quit -- follow our continuing coverage of all things volcanic!

Thirty years after the historic eruption of Mount St. Helens, the mountain is teaching us new lessons.

Among the team of geologists monitoring Mt. St. Helens at the time of its violent eruption 30 years ago, Don Swanson recounts his experience with poignant clarity.

A new feature on the USGS lets you relive two months of anticipation as scientists waited for the epic eruption of Mt. St. Helens, which finally came on May 18, 1980.

Ash affects engines in strange ways, sometimes "turbocharging" them for short periods of time.

Fiery ash clouds drifting over Europe have canceled hundreds of flights.

In one of the hottest places on Earth, volcanic activity paints the land in stunning, otherworldly colors.

What do you get when an erupting volcano meets a writhing, glowing aurora borealis in the chilly Arctic night? Check out the incredible pictures!

These incredible eruptions caught on video are reminders that we live on a fiery volcano planet.

Ash and steam aren't the only byproducts of a volcanic eruption.

A sleeping supervolcano may be silent now, but when Long Valley does wake up, the results could be explosive.

Views from on high of the simmering volcano and its environs.

Take a look back at some of the most violent volcanic eruptions ever recorded.
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