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Eleven legs in, the competitors are starting to feel the pain as Alaska pushes them over the edge. The four teams are dropped below a steep peak high in the Alaska Range, and as they climb to find the insertion flag, the elevation takes its toll. Onc... (more)e they reach the flag, they find that they must descend 2,000 feet to the Triumvirate Glacier, then battle 24 miles of ice fields, frigid rivers and rugged terrain to reach the LZ at Beluga Lake.