The men pick their route: some take the higher land, some follow the river. Expert climber Willi Prittie leads Brent ...

The men are divided into two groups, building competing rafts. Mountain man Marty Raney is taking charge, building a ...

Helicopters leave the eight explorers on a snow-capped summit. The men split into three groups and approach a 300-foo...

The eight explorers are on the fourth leg of their expedition and are struggling to stay afloat on the Talachulitna R...

The explorers brave the dangers of Alaska's "Bear Highway" only to find themselves stranded and fighting to survive M...

Facing the brink of collapse, the eight starving explorers set out with one mission: harvest as much food as possible...

In this leg of the expedition, the eight survivalists paddle 40 miles through a minefield of icebergs and glaciers in...

On day 32 of the expedition, the explorers traverse the Nizina River Valley, a vast expanse of land known for its lus...

The explorers travel to Admiralty Island, home to the highest density of brown bears in North America, and it's not l...

On the last leg of the 3,000-mile journey across Alaska, the explorers battle a brutal winter snowstorm as they climb...