Mt. St. Helens lava dome grows 100 metres higher in nine days
The new lava lobe inside Mount St. Helens' crater has sprouted a piston-like protrusion the size of a 30-story building - glowing red at night.
"The magma is pushing the plug upward. It's going high in the sky," said hydrologist Carolyn Driedger of the U.S. Geological Survey at the Cascades Volcano Observatory in Vancouver, about 50 miles from the southwest Washington mountain.
One section of the new lobe has risen by 330 feet in the past nine days, Driedger said.
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