Scrambling from the start, 12 elite survivalists take on their harshest location yet, the sub-freezing Rocky Mountains of Montana.
Twelve brave souls take on their first XL challenge in the Colombian Badlands; survivalists must battle disease-carrying insects, scorching heat, six-foot caiman and stalking jaguars; they must trek 40 miles in 40 days.
The Peruvian Amazon's aggressive piranha, venomous fer de lance and even poisonous plants test 12 survivalists. XL rookies look to last 40 days while vets try to make 60 and become Legends. Four survivalists will be gone in the first four days.
Pushing past day 50, the final six survivalists come together as one group but must scramble to expand their shelter; the Amazon unleashes a bee swarm and a torrential storm; a knife accident threatens a survivalist's challenge.
Steven takes a huge risk when he raids a caiman nest for eggs; Dan and Waz join forces to snare the vultures circling their camp; Amber, Trish and Jen take on a huge project but tensions could tear them apart.
