The four remaining teams confront their next challenge as they get helicoptered to the top of a glacier, where they must navigate unforgiving terrain and dangerous crevasses. With high altitudes and fewer resources, the tasks become more demanding. In the end, the three teams that remain will compete in the final journey and the one team that has shown the most heart, courage, initiative and resolve in their quest to "get out alive" will claim a life-changing grand prize of $500,000. Bear Grylls hosts.