Dustin "Duck" Campbell

For the first time, twelve 21-day survivalists take on the Colombian Badlands for 40 days and discover that they must travel 64km to reach the end. Extreme heat, rain, bugs and deadly cats will test their endurance like never before.

Twelve survivalists enter a punishing African location where tribes in the area live by a simple rule: banish the weak. As the 40-day challenge begins, deadly crocodiles and territorial leopards circle, and a survivalist is targeted for banishment.

Twelve elite survivalists take on their toughest location yet, Montana's sub-freezing Rocky Mountains.

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.

With Joe on the brink, Ky and Gabby secure the first food win. Looking to catch trout, Waz and Jake risk hypothermia to dam a frigid stream. Medics must intervene after a fainting spell. A survivalist is forced from the challenge.

Desperate for food, Jake and Waz brave frigid water to build a dam. Gabby takes a huge risk that could lead to hypothermia. Jermaine and Sarah clash over survival strategies. A team secures the first big food win of the challenge.