Voir Ultimate Survival Alaska, Season 3 - Episode 5

Riding on the historic Alaskan Railroad, the teams are inserted into a remote river valley. To reach extraction, the adventurers must traverse mountains, canyons, glaciers and an iceberg-filled lake. The winless Military team pulls out all the stops. Falling behind, The Endurance team rigs a Tyrolean traverse across an ice gorge. It's a dangerous maneuver, but could propel them to a win.