Ultimate Survival Alaska - Season 2 Episode 4 -

The teams trek 30 miles up and over the snow-covered Tordrillo Mountains to reach the landing zone on the banks of Frustration Lake. The Military team sticks to lower elevations, but ends up staring a huge canyon straight in the face. The Endurance team's strategy of hiking up and over backfires when they run into a wall of ice. The Mountaineers are also climbing straight up, counting on their rock-climbing experience to get to the extraction point.