View from the south onto the caldera. To the left, the complex of the Polyvotis craters and lava dom...
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The caldera floor with Stefanos crater in spring time. (c)
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The Stefanos crater at the floor of the caldera. (c)
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The Stefanos crater (c)
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The inner walls of the caldera, deeply gullied by winter rains. (c)
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Erosion gullies and white, hydrothermally altered rocks. (c)
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The flat bottom of the caldera. (c)
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View onto the floor of the caldera. (c)
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Organge lychen and Stefanos crater in the background (c)
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The Stephanos crater seen from Nikia village (c)
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The crater floor is dotted with holes containing boiling mud. (c)
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Hole containing boiling water in the mud crust covering the Stefanos crater floor (c)
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Boiling mud. (c)
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Sulphur crystals around the steam vent. (Photo: Tom Pfeiffer)
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Fragile chimneys made from sulphur on the ground. (c)
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Sulphur crystals forming thin shells. (c)
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