Craters


Small steam explosions sometimes occur between dome-building eruptions. They generate plumes of ash and steam...

... and craters on the dome's surface.

These craters are formed by the ejection of rocks and from the accumulation of ash and rocks around the vent. The ash and rock build the crater rim.


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Lava Dome Features

Lava Domes

After the Eruption

Mount St. Helens & Other Volcanoes

Mount St. Helens VolcanoWorld