Laura Zerra

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.

Adam, Heather and Sam score a massive protein win, but the trek through Colombia's badlands puts the team at risk.

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

Malorie and Shell set their sights on an elusive caiman while Adam and Heather build a raised platform shelter to save Sam from ant attacks.

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.