A mother-and-son duo takes on the Cash Lift in this season finale episode.

Grady and Josh confront the dangers of Croatia's Velebit Mountain.

Grady and Josh battle snakes, mosquitoes and dehydration in Nicaragua.

Grady and Josh face punishing conditions in Bulgaria's Rila Mountains.

Shipwrecked, Grady and Josh seek solutions for food, shelter and water.

Stranded in the Peruvian Andes, Grady and Josh battle altitude sickness.

Experts face Wyoming’s Bighorn Mountains in the dead of a brutal winter.

Grady and Bo are dropped into separate locations of a Colombian jungle.

Innovative survival tricks help acquire food, shelter, fire and water.

Problems arise immediately when the garage works on a 1964 GMC Truck.

Two Naked and Afraid super fans get one-on-one intensive primitive survival training with veteran survivalist, Gabrielle, before attempting a full 21-day challenge alongside all-stars Matt Wright and Gary Golding.

This season will take nudity to places you'll never see coming.

WWE superstar Ronda Rousey is here to get you into Shark Week shape!

It doesn't get any more fresh than this! Join Guy Fieri aboard the Bimini Blue for some lionfish ceviche.

Ronda Rousey, Paul de Gelder and Joe Romeiro join host Julian McCullough.

Lindsey Vonn, Riley Elliot and Tristan Guttridge join Julian McCullough.