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| Hoar frost in one of the ice caves near the lower Erebus hut. |
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| Brilliant new room of an ice cave near the lower Erebus hut. |
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| Bulbous ice in a cave near the lower Erebus hut. |
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| Ice crystals in one of the ice caves near the lower Erebus hut. |
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| Close-up of some of the ice crystals common in ice caves on Mt. Erebus. |
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| View up the chimney of an Erebus ice tower. |
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| Sunlight filtered through the ice and snow of the ceiling results in an intense blue light. |
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| Contrasting blue of ice cave interior to white of ice cave entrance. |
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| Ice crystals hanging from the ceiling of one of the ice caves near the lower Erebus hut. |
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| Hoar frost in one of the Erebus ice caves. |
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| Hoar frost in one of the ice caves near the lower Erebus hut. |
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| Hoar frost in ice cave near the lower Erebus hut. |
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| Nelia Dunbar sampling warm ground for CO2 gas. |
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