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Almost vertical look at Mount St. Helens dome, old and new. The "ol...
Almost vertical look at Mount St. Helens dome, old and new. The "ol...
Almost vertical look at Mount St. Helens dome, old and new. The "ol...
Almost vertical look at Mount St. Helens dome, old and new. The "ol...

Almost vertical look at Mount St. Helens dome, old and new. The "old dome" (1980-86) is in the lower half of the image and the new uplift and growth is in the upper half of the image.

Almost vertical look at Mount St. Helens dome, old and new. The "old dome" (1980-86) is in the lower half of the image and the new uplift and growth is in the upper half of the image.

Mount St. Helens dome and uplift with new spine, as seen from the s...
Mount St. Helens dome and uplift with new spine, Oct. 2005
Mount St. Helens dome and uplift with new spine, Oct. 2005
Mount St. Helens dome and uplift with new spine, Oct. 2005

Mount St. Helens dome and uplift with new spine, as seen from the southeast. October 2005

Mount St. Helens crater dome and uplift with new growth, as seen fr...
Mount St. Helens crater dome and uplift with new growth. Oct. 2005
Mount St. Helens crater dome and uplift with new growth. Oct. 2005
Mount St. Helens crater dome and uplift with new growth. Oct. 2005

Mount St. Helens crater dome and uplift with new growth, as seen from the west. October 2005

Mount St. Helens crater and steaming dome as seen from the southeas...
Mount St. Helens crater and steaming dome as seen from SE. Oct. 2005
Mount St. Helens crater and steaming dome as seen from SE. Oct. 2005
Mount St. Helens crater and steaming dome as seen from SE. Oct. 2005

Mount St. Helens crater and steaming dome as seen from the southeast. October 2005

Mount St. Helens crater, dome, and plume, as seen from Johnston Rid...
Mount St. Helens crater, dome, and plume, as seen from Johnston Rid...
Mount St. Helens crater, dome, and plume, as seen from Johnston Rid...
Mount St. Helens crater, dome, and plume, as seen from Johnston Rid...

Mount St. Helens crater, dome, and plume, as seen from Johnston Ridge Observatory (JRO). October 2005

Mount St. Helens crater, dome, and uplift from the northeast. Octob...
Mount St. Helens crater, dome, and uplift from NE. Oct. 2005
Mount St. Helens crater, dome, and uplift from NE. Oct. 2005
Mount St. Helens crater, dome, and uplift from NE. Oct. 2005

Mount St. Helens crater, dome, and uplift from the northeast. October 2005

Mount St. Helens crater, with the Pumice Plain in the foreground. O...
Mount St. Helens crater, Pumice Plain in the foreground. Oct. 2005
Mount St. Helens crater, Pumice Plain in the foreground. Oct. 2005
Mount St. Helens crater, Pumice Plain in the foreground. Oct. 2005

Mount St. Helens crater, with the Pumice Plain in the foreground. October 2005

Mount St. Helens dome and uplift from the west. October 2004...
Mount St. Helens dome and uplift from the west. Oct. 2005
Mount St. Helens dome and uplift from the west. Oct. 2005
Mount St. Helens dome and uplift from the west. Oct. 2005

Mount St. Helens dome and uplift from the west. October 2005

Mount St. Helens dome as seen from Sugar Bowl, on the northeast fla...
Mount St. Helens dome as seen from Sugar Bowl, on NE flank. Oct. 2005
Mount St. Helens dome as seen from Sugar Bowl, on NE flank. Oct. 2005
Mount St. Helens dome as seen from Sugar Bowl, on NE flank. Oct. 2005

Mount St. Helens dome as seen from Sugar Bowl, on the northeast flank. October 2005

Ash collection buckets, installed on the flanks of Mount St. Helens...
Ash collection buckets, installed on the flanks of Mount St. Helens...
Ash collection buckets, installed on the flanks of Mount St. Helens...
Ash collection buckets, installed on the flanks of Mount St. Helens...

A USGS scientist is collecting the ash from the bucket, which was taken back to the Cascades Volcano Observatory for analysis. Results help scientists understand more about the eruption that produced the ash and can give insight into what type of eruptions might occur in the future.

A USGS scientist is collecting the ash from the bucket, which was taken back to the Cascades Volcano Observatory for analysis. Results help scientists understand more about the eruption that produced the ash and can give insight into what type of eruptions might occur in the future.

Growing lava dome within Mount St. Helens' crater as seen from the ...
Growing lava dome within Mount St. Helens' crater, Oct. 2005
Growing lava dome within Mount St. Helens' crater, Oct. 2005
Growing lava dome within Mount St. Helens' crater, Oct. 2005

Growing lava dome within Mount St. Helens' crater as seen from the east. October 2005

Mount St. Helens dome and uplift as seen from the west. October 200...
Mount St. Helens dome and uplift as seen from the west. Oct. 2005
Mount St. Helens dome and uplift as seen from the west. Oct. 2005
Mount St. Helens dome and uplift as seen from the west. Oct. 2005

Mount St. Helens dome and uplift as seen from the west. October 2005

An Autumn scene from street level looking out to buildings and a high mountain
ngtoc_ Ogden City with Wasatch Mountains
ngtoc_ Ogden City with Wasatch Mountains
ngtoc_ Ogden City with Wasatch Mountains

Ogden, Utah in the Fall with Wasatch Mountains nearby

A landscape view from a residential area looking out at high peaks nearby
ngtoc_ City and Mountain
ngtoc_ City and Mountain
ngtoc_ City and Mountain

View of Wasatch Mountains from Ogden, Utah

Image: Rock-Fall Estimating
Rock-Fall Estimating
Rock-Fall Estimating
Rock-Fall Estimating

Geologist Ed Harp estimates rock-fall susceptibility in American Fork Canyon, UT.

Geologist Ed Harp estimates rock-fall susceptibility in American Fork Canyon, UT.

View from the southeast side of Mount St. Helens lava dome looking ...
View from SE side of Mount St. Helens lava dome looking at the upli...
View from SE side of Mount St. Helens lava dome looking at the upli...
View from SE side of Mount St. Helens lava dome looking at the upli...

View from the southeast side of Mount St. Helens lava dome looking at the uplift of the glacier and south flank of the lava dome.

View from the southeast side of Mount St. Helens lava dome looking at the uplift of the glacier and south flank of the lava dome.

View from the south-southeast side of Mount St. Helens lava dome lo...
View from the south-SE side of Mount St. Helens lava dome looking a...
View from the south-SE side of Mount St. Helens lava dome looking a...
View from the south-SE side of Mount St. Helens lava dome looking a...

View from the south-southeast side of Mount St. Helens lava dome looking at the lava dome (behind) and the uplift of the glacier and south flank of the lava dome (in front).

View from the south-southeast side of Mount St. Helens lava dome looking at the lava dome (behind) and the uplift of the glacier and south flank of the lava dome (in front).

Debris flow within Loowit Channel that originated from Mount St. He...
Debris flow within Loowit Channel —originated from Mount St. Helens
Debris flow within Loowit Channel —originated from Mount St. Helens
Erosional debris flows carve into the Sasquach Steps at Mount St. H...
Erosional debris flows carve into Sasquach Steps at Mount St. Helens
Erosional debris flows carve into Sasquach Steps at Mount St. Helens
Erosional debris flows carve into Sasquach Steps at Mount St. Helens

The dark "muddy" looking area in the right foreground is old erosional debris flows from Step Channel (on right) over the years. The lighter ribbon of grey to the left of the darker area is a lahar from Loowit Channel from early morning of October 6, 2004. The yellowish-green color on the surface is plant growth.

The dark "muddy" looking area in the right foreground is old erosional debris flows from Step Channel (on right) over the years. The lighter ribbon of grey to the left of the darker area is a lahar from Loowit Channel from early morning of October 6, 2004. The yellowish-green color on the surface is plant growth.

Mount St. Helens crater mouth looking downstream at Step (left) and...
Mount St. Helens crater mouth looking downstream at Step and Loowit...
Mount St. Helens crater mouth looking downstream at Step and Loowit...
Mount St. Helens crater mouth looking downstream at Step and Loowit...

Step Channel and Loowit Channel merge on the Pumice Plain. Spirit Lake is visible on the upper right. The yellowish-green color on the surface is plant growth.

Step Channel and Loowit Channel merge on the Pumice Plain. Spirit Lake is visible on the upper right. The yellowish-green color on the surface is plant growth.

Image: Rock-Fall Estimating
Rock-Fall Estimating
Rock-Fall Estimating
Rock-Fall Estimating

Geologist Ed Harp estimates rock-fall susceptibility in American Fork Canyon, UT.

Geologist Ed Harp estimates rock-fall susceptibility in American Fork Canyon, UT.