What is the current height of the dome and how long will it take to fill the
crater
again at the rate it is rebuilding?
Karen Cloutier gr 4 teacher
Dear Karen,
The dome at Mount St. Helens is 1,150 feet (351 meters) above crater floor on
the north side and 690 feet (210 meters) on the south side. It has been
inactive since 1991. A new eruption would be needed for a new dome to start filling the
crater. Visit the Mount St. Helens page
for more information about the dome.
Steve Mattox, University of North Dakota
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