Coalsack Bluff (84°14′S 162°25′E) is a small rock bluff standing at the northern limits of Walcott Neve, 6 nautical miles (11 km) west-southwest of Bauhs Nunatak. It was so named by the New Zealand Geological Survey Antarctic Expedition (1961–62) because of the coal seams found running through the bluff.
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Coalsack Bluff Wikipedia(Text) CC BY-SA