Crater and dome view of Mount St.Since Dec. 1980, eruptions of Moun...
Detailed Description
Lava dome within Mount St. Helens crater grew between 1980 and 1986 as dacitic lava erupted from the vent. This photograph, taken in September 1984.
Lava dome within Mount St. Helens crater grew between 1980 and 1986 as dacitic lava erupted from the vent. This photograph, taken in September 1984.