The National Geographic Magazine, Volume 115National Geographic Society, 1959 - Geography Indexes kept up to date with supplements. |
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Page 111
... slope dropped at an angle of 50 degrees . I expelled the air from my chest and , with arms extended straight before me , sank silently Below me the jumble of lime- down the slope . stone fragments bedded in black ooze slid upward ...
... slope dropped at an angle of 50 degrees . I expelled the air from my chest and , with arms extended straight before me , sank silently Below me the jumble of lime- down the slope . stone fragments bedded in black ooze slid upward ...
Page 129
... slope , and finally we moved into the black tunnel at the bottom . The floor is nearly level here , and anything that rolled down the slope must have been caught long before it reached this point . We found nothing . Returning to more ...
... slope , and finally we moved into the black tunnel at the bottom . The floor is nearly level here , and anything that rolled down the slope must have been caught long before it reached this point . We found nothing . Returning to more ...
Page 243
... slopes steep enough to avalanche make the best ski runs . Once we establish the safety of a slope and skiers get on it , they pack the snow and reduce danger to a minimum . " Soon Alf Engen and I reached the top of Alta's Peruvian Ridge ...
... slopes steep enough to avalanche make the best ski runs . Once we establish the safety of a slope and skiers get on it , they pack the snow and reduce danger to a minimum . " Soon Alf Engen and I reached the top of Alta's Peruvian Ridge ...
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