The ash plain of the caldera of Ambrym (Photo: Tom Pfeiffer)
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Hiking along one of the major flash flood beds cutting through the ash deposits of the caldera. (Ph...
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Ulla finds a beautifully shaped small bomb jected from Benbow among the gravel and sand of the flood...
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The little bomb (Photo: Tom Pfeiffer)
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Spectacular section of old ash, witness of explosive phases of Ambrym in recent geologc history. (Ph...
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Thunderstorms are frequent above Ambrym. Here, the lava lakes in the craters illuminate a rain cloud...
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Rainbow above the "oasis" near the campsite. (Photo: Tom Pfeiffer)
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The vegetated outer area of the ash plain in the morning. Benbow crater is visible in the background...
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View over the ash plain towards the southern rim of the caldera. (Photo: Tom Pfeiffer)
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View north oer the ash plain towards Benbow (l) and Marum(r) craters. The "oasis" (left) in the ash ...
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Erosion gullies converging towards one of the major drainage canyongs out of the caldera to the west...
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Curved small erosion shapes and isolated flat plates of ash consolidated by moss are a typical morph...
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Benbow crater and the rim of the caldera seen from outside, where the flanks of Ambrym volcano are c...
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Ascending the Benbow crater along a ridge between erosion gullies. (Photo: Tom Pfeiffer)
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(Photo: Tom Pfeiffer)
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(Photo: Tom Pfeiffer)
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