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MSH86_st_helens_night_shot_new_lobe_10-22-86.jpg The last dome-building eruption of Mount St. Helens during the 1980s occurred in October 1986. A new lobe was extruded, increasing the dome's height to 925 feet (282 meters), making it taller than a 77-story building. In volume, the dome was nearly 40 times the size of Seattle's Kingdome stadium. In this 30-minute, moon-lit exposure, hot rock from the new lobe is seen glowing on top of the dome. The view is from Harrys Ridge, five miles (8 kilometers) north of the volcano.
USGS Photograph taken on October 22, 1986, by Lyn Topinka.
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MSH04_night_shot_new_dome_from_JRO_11-04-04.jpg Night shot (approximately 7:30 PM PST) of new growth on Mount St. Helens' lava dome, as seen from Johnston Ridge Observatory (JRO).
USGS Photograph taken on November 4, 2004, by Elliot Endo.
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MSH04_new_growth_hot_glow_plume_closein_11-04-04.jpg Hot glowing new growth on Mount St. Helens' lava dome, as seen from Johnston Ridge Observatory (JRO), with base of small steam and ash plume.
USGS Photograph taken on November 4, 2004, by Elliot Endo.
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MSH05_new_dome_hotspots_startrails_from_loowitview_07-14-05.jpg Mount St. Helens' new dome with hotspots and startrails, as seen from Loowit Viewpoint, just west of the Johnston Ridge Observatory (JRO).
USGS Photograph taken on July 14, 2005, by Elliot Endo.
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MOVIE MSH05_MOVIE_dome_glow_from_loowitview_07-14-05.avi New dome with hotspots, as seen from the Loowit Viewpoint west of the Johnston Ridge Observatory (JRO).
USGS Photographs taken on July 14, 2005 by Elliot Endo.
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