1. Somewhere between confronting the 1991 ice barrier and publishing " Riddle," 2. A few hours later, they reached an ice barrier , which blocked progress towards the south-east. 3. He also participated, with the scientists Great Ice Barrier . 4. During early September further attempts were made to penetrate the ice barrier to the west. 5. The plan did not gain any support as the ice barriers proved even more difficult. 6. At that point the ice barrier becomes slightly buoyant and rises a bit from its mucky foundations. 7. As the melting-and-freezing cycle continues, an ice barrier is created that grows upward, toward the roof peak. 8. The final hurdle before the summit is an ice barrier known as " death throat, " he said. 9. It was originally called "'The Barrier "', with various adjectives including "'Great Ice Barrier "', as it prevented sailing further south. 10. The ship crosses an ice barrier and arrives in open sea, close to the South Pole, albeit with a mild climate.
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