A surface expression of geothermal activity.
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A surface expression of geothermal activity.
![Close-in view of Mount St. Helens' dome from Sugar Bowl. Large crac...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img869.jpg?itok=-ckWPAHT)
Close-in view of Mount St. Helens' dome from Sugar Bowl. Large crack down center of new growth is a fault (one of many on the dome), with the right section becoming higher than the left. December 2005
Close-in view of Mount St. Helens' dome from Sugar Bowl. Large crack down center of new growth is a fault (one of many on the dome), with the right section becoming higher than the left. December 2005
![Dome surface within Mount St. Helens' crater, close-in view. Decemb...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img866.jpg?itok=y4S3VlCS)
Dome surface within Mount St. Helens' crater, close-in view. December 2005
Dome surface within Mount St. Helens' crater, close-in view. December 2005
![Dome within Mount St. Helens crater from the Johnston Ridge Observa...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img871.jpg?itok=M0k3toya)
Dome within Mount St. Helens crater from the Johnston Ridge Observatory (JRO). December 23, 2005
Dome within Mount St. Helens crater from the Johnston Ridge Observatory (JRO). December 23, 2005
![Dome within Mount St. Helens' crater with glacier uplift, viewed fr...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img863.jpg?itok=w58BLJgK)
Dome within Mount St. Helens' crater with glacier uplift, viewed from the northeast. The green circle on the left crater wall is lens flare. December 23, 2005
Dome within Mount St. Helens' crater with glacier uplift, viewed from the northeast. The green circle on the left crater wall is lens flare. December 23, 2005
![Ice build up on the Sugar Bowl Camera on Mount St. Helens western c...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img867.jpg?itok=KfWDIDnQ)
Ice build up on the Sugar Bowl Camera on Mount St. Helens western crater rim.
Ice build up on the Sugar Bowl Camera on Mount St. Helens western crater rim.
![Mount St. Helens from the Johnston Ridge Observatory (JRO). Decembe...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img862.jpg?itok=KChPm3Tr)
Mount St. Helens from the Johnston Ridge Observatory (JRO). December 2005
Mount St. Helens from the Johnston Ridge Observatory (JRO). December 2005
![Mount St. Helens' crater and dome, from Sugar Bowl. ...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img868.jpg?itok=OhkT4r1n)
Mount St. Helens' crater and dome, from Sugar Bowl.
Mount St. Helens' crater and dome, from Sugar Bowl.
![Mount St. Helens' glacier uplift, viewed from the east. New growth ...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img865.jpg?itok=tCT3pZ_T)
Mount St. Helens' glacier uplift, viewed from the east. New growth is to the right. December 23, 2004.
Mount St. Helens' glacier uplift, viewed from the east. New growth is to the right. December 23, 2004.
![Seismic spider, a rapid-response instrument slung from a helicopter...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img958.jpg?itok=b0tA-Wtp)
Seismic spider (painted green). This unit was designed with a seperate weighted accelerometer (seismic unit)to replace the unit put out on November 20, 2004.
Seismic spider (painted green). This unit was designed with a seperate weighted accelerometer (seismic unit)to replace the unit put out on November 20, 2004.
Laura Coffey,a chemist at the National Water Quality Laboratory, loads on-line solid-phase extraction cartridges into the high-performance liquid chromatography/mass spectrometer (HPLC/MS) in preparation for testing and calibration
Laura Coffey,a chemist at the National Water Quality Laboratory, loads on-line solid-phase extraction cartridges into the high-performance liquid chromatography/mass spectrometer (HPLC/MS) in preparation for testing and calibration
![Dome within Mount St. Helens' crater compressing glacier to the rig...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img879.jpg?itok=UJA5rASO)
Dome within Mount St. Helens' crater compressing glacier to the right, viewed from west. December 16, 2004.
Dome within Mount St. Helens' crater compressing glacier to the right, viewed from west. December 16, 2004.
![Dome within Mount St. Helens' crater viewed from the Johnston Ridge...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img880.jpg?itok=izknZacf)
Dome within Mount St. Helens' crater viewed from the Johnston Ridge Observatory (JRO).
Dome within Mount St. Helens' crater viewed from the Johnston Ridge Observatory (JRO).
Mount St. Helens aerial view from the north-northeast.
Mount St. Helens aerial view from the north-northeast.
![Mount St. Helens from the northwest. Mount Hood (left) and Mount Je...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img874.jpg?itok=gddGiZKw)
Mount St. Helens from the northwest. Mount Hood (left) and Mount Jefferson (middle) are on the skyline. December 2005
Mount St. Helens from the northwest. Mount Hood (left) and Mount Jefferson (middle) are on the skyline. December 2005
Mount St. Helens' crater and dome from the northwest.
Mount St. Helens' crater and dome from the northwest.
Mount St. Helens' crater and dome from the south.
Mount St. Helens' crater and dome from the south.
Mount St. Helens' dome from the east-northeast.
Mount St. Helens' dome from the east-northeast.
![Mount St. Helens and Mount Rainier, aerial view toward the north....](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img881.jpg?itok=cA0Jtm7v)
Mount St. Helens and Mount Rainier, aerial view toward the north.
Mount St. Helens and Mount Rainier, aerial view toward the north.
Mount St. Helens' crater and dome from the east.
Mount St. Helens' crater and dome from the east.
A scene along a road in Senegal, photographed in 2004 by U.S. Geological Survey Scientist G. Gray Tappan as part of his work on West African land cover. Tappan had previously photographed the scene in 1994.
A scene along a road in Senegal, photographed in 2004 by U.S. Geological Survey Scientist G. Gray Tappan as part of his work on West African land cover. Tappan had previously photographed the scene in 1994.