The survivalists must race across a 30-mile stretch of treacherous glacier, plunge down a 2,000-foot gully and battle 15 miles of whitewater rapids to the extraction point in Berners Bay.
On the final leg of their journey, the explorers summit a massive mountain of rock and ice in the Juneau Icefield. As a final farewell gift, Alaska throws a punishing winter storm their way.
With only a few days left in the expedition, the survivalists travel to Admiralty Island, home to one of the densest brown bear populations in North America. The men arrive at prime feeding time.
The survivalists are confronted with one of their biggest obstacles yet: the Nizina River. The rushing, unforgiving glacial waters could sweep even the toughest explorer off his feet.
In this leg of the expedition, our eight survivalists paddle 40 miles through a minefield of icebergs and glaciers in Prince William Sound.
The explorers divide into three groups to stockpile food for future legs. Mountain man Marty is searching for fish in the island's interior. But when the tide comes in, he and his son are trapped on the wrong side of the river.
The explorers have 72 hours to reach their extraction landing zone: a cold 35 miles away. Dallas Seavey and his brother Tyrell are the first group to break off and travel into one of the most bear-populated areas in the world.
The eight explorers are on the fourth leg of their expedition and are struggling to stay afloat on the Talachulitna River.
Helicopters leave the eight explorers on a snow-capped summit. The men split into three groups and approach a 300-foot cliff. They must descend a ravine, and then traverse eight miles of the Triumvirate Glacier.
The men are divided into two groups, building two competing rafts. One weighs in at nearly 2 tons while the other group hopes their small raft will be able to maneuver in the turbulent Yukon.
The men pick their route: some take the higher land, some follow the river. These born competitors are determined to be the first to arrive.
They are some the toughest, most extreme survivalists that Alaska has to offer. Going head to head, eight men of a rare breed are about to take the ultimate test of survival in Arctic conditions that only National Geographic could inspire. Dropped in the middle of the Alaskan wilderness by bush plane, with only their raw, mountain-man ingenuity.
The explorers travel to Admiralty Island, home to the highest density of brown bears in North America, and it's not long before they receive a "grizzly" welcome.
Get to know Team Endurance, three world-class athletes who are counting on their exceptional physical conditioning, diverse skill sets and love of the rugged Alaskan lifestyle to help propel them to victory.
Four teams battle each other and the Alaskan frontier. The new season of Ultimate Survival Alaska starts Sunday, December 15th at 9PM on Nat Geo.
Meet Team Mountaineers, a group of skilled climbers and all-around outdoorsmen who are able to use their native Alaskan experience as a competitive advantage.
Welcome to the world of Team Woodsmen, an eclectic group that has the survival skills and temperament to make the best use of everything the wilderness has to offer.
Take a look at Team Military, three veterans of America's elite military forces who have received some of the finest survival and firearms training in the world.
Dog teams race towards a glacial river, but Marty s team may have to hoof it like the military boys.
The teams hit the river in a push to make the LZ, but the river aims to claim a victim.
Go off the grid with eight survival experts on a 10-leg expedition in the brutal and dangerous Alaska terrain--a test of survival only National Geographic could inspire.
Matt Raney shares his thoughts while on the expedition through the Tordrillo Mountains.
Dallas Seavey shares his thoughts while on the expedition through the Tordrillo Mountains.
Matt Raney describes the trip through the Valley of Ten Thousand Smokes to Katmai Bay.
Tyler Johnson describes the exploration of Nunivak Island
Dallas Seavey reports on the last leg of their expedition, summiting the Juneau ice cap.
Willi Prittie shares his thoughts while on the expedition through the Tordrillo Mountains.
Tyrell Seavey shares his thoughts while on the expedition through the Tordrillo Mountains.