300-foot fin grows in crater of Mount St. Helens
A massive new fin sprouts in Mount St. Helens' crater, the result of lava upsurges in recent weeks. Scientists with the Cascades Volcano Observatory expect the 300-foot-tall spire -- the size of a tilted-up football field -- to collapse upon the crater's expanding dome, as others have done since the volcano started erupting again 18 months ago.And don't forget, you can see Mt St Helens during daylight hours on a clear day at the Mount St. Helens VolcanoCam
Although this fin, viewed Tuesday while facing southwest, is smaller than another that vaulted 525 feet last summer before toppling on itself, its tip reaches nearly as high 7,698 feet above sea level -- because the lava dome has risen dramatically. Time-lapse photographs show lava emerging from a crater vent at a rate of 3 to 6 feet a day, steadily building the dome.