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Machinery removing logs from immense jam at east end of Swift Reservoir.
Steam pit at approximate site of Harry Truman's lodge.
The same ridge (above) showing timber blown down by eruption.
Castle Lake, formed by the eruption, about five miles northwest of the crater.
Logjam at east end of Swift Reservoir, south of the mountain.
Summer homes and boat docks at east end of Swift Reservoir, after eruption.
Unusual gas-bubble patterns at Castle Lake.
Unusual gas-bubble patterns from decaying organic matter at Castle Lake.
Damaged area on east flank of mountain.
Damaged peak east of mountain, snow-covered ridge in background.
Debris flow with steam pits, north of mountain.
Downed timber along North Fork of Toutle River.
Crest of blast-seared ridge, east of mountain.
Close-up view of blast-seared ridge.
Channeled debris flow east of mountain.
Debris flow northeast of mountain.
Debris flow northeast of mountain.
Blast area north of crater.
Gas Bubbles emerging from underwater decaying organic matter at Castle Lake.
The crater, seen from the pyroclastic flow, with steam rising in foreground.
The lava dome in the crater, taken from a distance with telephoto lens.
Inside the crater looking out, with Spirit Lake in the background.
Channeled debris flow with Spirit Lake in the background.
Helicopter on ground near shore of Castle Lake.
Channeled debris flow seen from the air.
Looking back into the crater from its mouth.
The crater, seen from the pyroclastic flow.
Inside the crater looking out.
Aerial view of South Fork of Toutle River, mountain in background.
Aerial view of the South Fork of the Toutle River, mountain in background.
View of the mountain from near the shore of Spirit Lake.
View of the mountain from near the shore of Spirit Lake.
Timber blown down atop ridge, looking toward the mountain. The road shown in the photograph was built to salvage some of the fallen timber
Timber blown down atop ridge, looking toward the mountain.
Mount St. Helens.
Colored ponds with the mountain in the background.
North Fork Toutle River debris flow, looking toward the mountain.
North Fork Toutle River debris flow, with timber blown down by eruption in background.
Valley of North Fork Toutle River, looking toward the mountain.
North Fork Toutle River debris flow, looking toward the mountain.
Army Corps of Engineers North Fork Toutle River impoundment from the air.
Army Corps of Engineers North Fork Toutle River impoundment from the air.
Colored ponds with Coldwater Lake in background. Barren hillsides reflected in lake.
Colored ponds on debris flow.
Colored ponds on debris flow.
Coldwater Lake, right, formed by the eruption when debris blocked Coldwater Creek. At left is a mudflow following the course of the creek.
North Fork Toutle River debris flow.
Home buried in mudflow at Maple Flat on North Fork of Toutle River.
Ruins of Weyerhaeuser logging camp on North Fork of Toutle River.
Home buried in mudflow at Maple Flat on North Fork of Toutle River.

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