| 41. | Try a Google image search for " Greenland subglacial topographic map " and variations thereof.
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| 42. | In 1998 a subglacial tunnel in Donjek Glacier collapsed after an outbreak of water flooded the area.
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| 43. | Pillow Creek is home to a subglacial volcano that formed and last erupted during the Pleistocene period.
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| 44. | This makes Byrd Subglacial Basin the lowest point on any of the Earth's continental plates.
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| 45. | Sediments, boulders and sands in the cave appear to be from a periglacial or subglacial origin.
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| 46. | Hoodoo Mountain is a tuya in northwestern British Columbia, which has had several periods of subglacial eruptions.
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| 47. | The craters are a part of a larger volcanic system with the subglacial Gr�msv�tn as a central volcano.
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| 48. | Evidence also exists for a deep subglacial trench beneath the glacial outlet, identified through seismic reflection methods.
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| 49. | North of Mount Cayley lies the parasitic Pali Dome subglacial volcano which is partly covered by glacial ice.
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| 50. | One valley with glacial features and a subglacial river channel at altitude is found on the northern flank.
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