02355.jpg
Breccia showing thin soil layer;
John Good;
June 1965
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02357.jpg
Absaroka volcanics cliff at the Northeast entrance;
William W Dunmire;
1969
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02358.jpg
Absaroka volcanics cliff at the northeast entrance;
William W Dunmire;
1969
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02360.jpg
View of Central Plateau (caldera) from Mt Washburn;
John Good;
1965
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02361.jpg
View of Tower Creek basin, a possible caldera;
John Good;
1966
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06753.jpg
Basalt columns in the Tower Falls area;
J Schmidt;
1977
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06755.jpg
Obsidian in rhyolite;
J Schmidt;
1977
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07838.jpg
Overhanging Cliff;
RG Johnsson;
1963
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09205.jpg
Fountain eruption, Hawaii Volcanoes National Park;
RG Johnsson;
1959;
Volcanics
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09206.jpg
Lava Lake, Hawaii Volcanoes National Park;
William W Dunmire;
1960;
Volcanics
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10459.jpg
Obsidian in the ground;
William S Keller;
1976
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10460.jpg
Obsidian Cliff;
William S Keller;
1976
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10461.jpg
Petrified tree;
William S Keller;
1979
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10462.jpg
Basalt columns;
William S Keller;
1977
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10463.jpg
Obsidian Cliff;
William S Keller;
1964
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10464.jpg
Obsidian Cliff;
William S Keller;
1976
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