All-Stars Wes and Suzänne take on Ecuador's relentless rainforest.

Tarantulas and desert heat test an adventurer and archaeologist in Texas.

When nature calls, a fan's risky survival strategy backfires.

An Australian bushman and American biologist take on Namibia's desert.

A pair pushing 50 and a pair in their 20s take on the Sonoran Desert.

South Africa's scorpions and aggressive ticks attack the survivalists.

Florida's black water swamp punishes a homesteader and a military vet.

All-stars Fernando and Dani return to Ecuador for their third challenge.

Survivalist Lynsey copes with her lone-wolf partner Darvil in South Africa.

Three survivalists risk it all scaling a massive cliff to forage for food.

Two teams of international survivalists attempt to endure in South Africa.

Two fan survivalists are in over their head in brutal South Africa.

Two fans face a challenge surrounded by herds of territorial cape buffalo.

Sneak peeks are revealed as show veterans prepare for the next challenge.

Twelve veteran survivalists take on the badlands of Colombia.

Hunger, thirst and distrust threaten to wreak havoc on several competitors.