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| Mt. Erebus and its long plume as viewed from Hut Point Peninsula. |
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| Bubble burst on the surface of the Erebus lava lake. |
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| Nelia Dunbar measuring CO2 gas at a small fumarole/ice tower. |
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| Nelia Dunbar measuring CO2 gas at a small fumarole/ice tower. |
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| Nelia Dunbar measuring CO2 gas at a very small fumarole. |
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| Nelia Dunbar getting in close to measure CO2 gas at a fumarole. |
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| Bill McIntosh scaling the exterior of an ice tower to get at one of the steam vents to measure CO2 gas levels. |
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| Nelia Dunbar at a small fumarole to measure the CO2 gas levels. |
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| The Mt. Erebus crater from the perspective of the video camera mounted on the crater rim. |
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| A close-up of Werner's "Fumarole", as viewed from the crater rim. |
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| Mt. Erebus lava lake as viewed from the crater rim on Jan. 16, 2004. |
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| Mt. Erebus lava lake as viewed from the crater rim on Jan. 16, 2004. |
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| Mt. Bird and Beaufort Island as viewed from the Mt. Erebus crater rim. |
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| Bird's eye view of Mt. Bird (from the Mt. Erebus crater rim). |
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| Trevor Popp and Bill McIntosh working at the Mac-Z seismic station. |
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