Such visual aids, however, could be wiped out in seconds by fog, low overcast, or blowing snow. These whiteouts obliterated all visual clues of depth, height, and distance and made us feel as though we were suspended in skim milk.
The maxim of polar travel when whiteouts develop is to make camp and sleep until visibility returns. Late in our journey we tested that maxim and lost. When we were only 30 miles from the Pole, heavy cloud cover and light fog enveloped us. By then we were…
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Source www.nationalgeographic.com
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