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May 04, 2006

Mount St. Helens grows 'fin'

USGS photo of fin forming in Mt. Saint Helens

Mount St. Helens continues to be showing all sorts of crazy cool volcanic activity. Right now, there's a fin-shaped slab of rock the size of a football field rising vertically inside of the crater. The slab rises about four or five feet a day. The slab's been holding steady at about a hundred meters tall, since the top tends to crumble away at about the same rate that it rises.

The overall lava dome within the caldera has been pushing outward at a rate of about a meter a day.

The local TV station website has more images of the fin. The US Forest Service has a live webcam trained on Mt. Saint Helens.

Posted by Chris Spurgeon at May 4, 2006 10:09 AM

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