Lassen Volcanic National Park, California. East across Bumpass Hell, showing the line of the eastern fault and the line of greatest activity.
Dates
Date Taken
1921
Summary
Lassen Volcanic National Park, California. East across Bumpass Hell, showing the line of the eastern fault and the line of greatest activity. The white slopes are altered dacite which is unaltered in the cliffs above. August 13, 1921.
Summary
Lassen Volcanic National Park, California. East across Bumpass Hell, showing the line of the eastern fault and the line of greatest activity. The white slopes are altered dacite which is unaltered in the cliffs above. August 13, 1921.
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