The May 18, 1980 eruption of Mount St. Helens began with an enormous landslide that slammed into Spirit Lake, blocking its natural outlet and raising the lake level by 197 feet.
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Landslide from May 18, 1980, eruption of Mount St. Helens
The May 18, 1980 eruption of Mount St. Helens began with an enormous landslide that slammed into Spirit Lake, blocking its natural outlet and raising the lake level by 197 feet.
Aerial view, Mount St. Helens' crater and dome, as seen from NE. No...
Aerial view, Mount St. Helens' crater and dome, as seen from the northeast. Note dusting of ash on Mount St. Helens' flank, left near rim.
Aerial view, Mount St. Helens' crater and dome, as seen from the northeast. Note dusting of ash on Mount St. Helens' flank, left near rim.
Aerial view, Mount St. Helens' crater and dome, as seen from NE.
Aerial view, Mount St. Helens' crater and dome, as seen from the northeast.
Aerial view, Mount St. Helens' crater and dome, as seen from the northeast.
Whaleback structure of dome withn Mount St. Helens' crater. Dome is...
Whaleback structure (center) of dome withn Mount St. Helens' crater. Dome is crumbling to right and glacier is uplifted to the left, view from the north. January 30, 2005.
Whaleback structure (center) of dome withn Mount St. Helens' crater. Dome is crumbling to right and glacier is uplifted to the left, view from the north. January 30, 2005.
Aerial view, Mount St. Helens' crater and dome
Aerial view, Mount St. Helens' crater and dome, as seen from the northwest.
Aerial view, Mount St. Helens' crater and dome, as seen from the northwest.
Lava domes within Mount St. Helens' crater, as seen from NW. The 19...
Lava domes within Mount St. Helens' crater, as seen from the northwest. The 1980-86 dome is in the crater on the left and the new 2004-05 dome is on the right.
Lava domes within Mount St. Helens' crater, as seen from the northwest. The 1980-86 dome is in the crater on the left and the new 2004-05 dome is on the right.
Mount St. Helens' crater and dome, as seen from NE.
Mount St. Helens' crater and dome, as seen from the northeast.
Mount St. Helens' crater and dome, as seen from the northeast.
Whaleback structure of dome withn Mount St. Helens' crater as seen ...
Whaleback structure (center) of dome withn Mount St. Helens' crater as seen from the northwest. January 24, 2005.
Whaleback structure (center) of dome withn Mount St. Helens' crater as seen from the northwest. January 24, 2005.
Crumbled sides of Mount St. Helens' dome, seen from NW. Jan 24, 2006
Crumbled sides of Mount St. Helens' dome, as seen from the northwest. January 24, 2005.
Crumbled sides of Mount St. Helens' dome, as seen from the northwest. January 24, 2005.
Glacier deformation, east side of Mount St. Helens' dome, as seen f...
Glacier deformation, east side of Mount St. Helens' dome, as seen from the northeast. Large crevasses within glacier covered with grey ash.
Glacier deformation, east side of Mount St. Helens' dome, as seen from the northeast. Large crevasses within glacier covered with grey ash.
Aerial view, Mount St. Helens' crater and dome, as seen from NE. Th...
Aerial view, Mount St. Helens' crater and dome, as seen from the northeast. The new dome is just visible in the steam in the back of the crater.
Aerial view, Mount St. Helens' crater and dome, as seen from the northeast. The new dome is just visible in the steam in the back of the crater.
Aerial view, Mount St. Helens' crater and dome, as seen from NE
Aerial view, Mount St. Helens' crater and dome, as seen from the northeast.
Aerial view, Mount St. Helens' crater and dome, as seen from the northeast.
Vertical view, Mount St. Helens' crater and dome. North is to botto...
Vertical view, Mount St. Helens' crater and dome. North is to the bottom and south to the top.
Vertical view, Mount St. Helens' crater and dome. North is to the bottom and south to the top.
Aerial view, Mount St. Helens' crater and dome, as seen from the north
Aerial view, Mount St. Helens' crater and dome, as seen from the north.
Aerial view, Mount St. Helens' crater and dome, as seen from the north.
Aerial view, Mount St. Helens' crater and dome, as seen from the no...
Aerial view, Mount St. Helens' crater and dome, as seen from the north-northeast. Ash covering is from event of January 16, 2005.
Aerial view, Mount St. Helens' crater and dome, as seen from the north-northeast. Ash covering is from event of January 16, 2005.
Mount St. Helens' crater and dome, as seen from NW. Ash covering is...
Mount St. Helens' crater and dome, as seen from the northwest. Ash covering is from event of January 16, 2005.
Mount St. Helens' crater and dome, as seen from the northwest. Ash covering is from event of January 16, 2005.
East side of Mount St. Helens' crater, glacier, and dome
East side of Mount St. Helens' crater and dome, as seen from the north.
East side of Mount St. Helens' crater and dome, as seen from the north.
Ash collecting, Plains of Abraham, eastern flank of Mount St. Helens
Ash collecting, Plains of Abraham, on the eastern flank of Mount St. Helens.
Ash collecting, Plains of Abraham, on the eastern flank of Mount St. Helens.
Dome within Mount St. Helens' crater, Jan 2005, aerial view from NE.
Dome within Mount St. Helens' crater, January 2005, aerial view from the northeast.
Dome within Mount St. Helens' crater, January 2005, aerial view from the northeast.
Mount St. Helens' crater and new dome, from the east.
Mount St. Helens' crater and new dome, from the east.
Mount St. Helens' crater and new dome, from the east.
Mount St. Helens' crater and new dome, from the south.
Mount St. Helens' crater and new dome, from the south.
Mount St. Helens' crater and new dome, from the south.