A family sailing trip turns deadly as their boat hits a rocky reef.

An amateur hiker falls down the side of a mountain, only to be saved by a small ledge where there is no escape.

After crashing into a snowy mountainside, a pilot must hike 45 miles in severe conditions to save his two friends from almost certain-death.

A fishing trip turns deadly as three men become shipwrecked on a remote and hostile desert island.

After his boat sinks to the bottom of the ocean, a sailor must survive for 76 days in a small inflatable life raft.

After losing his canoe, a 22-year-old finds himself struggling for survival in the middle of the Amazon.

A vacation turns deadly as a newlywed couple's airplane crashes into the dense Costa Rican rainforest.

A Colorado River rafting trip turns deadly when a raft capsizes and leaves a man alone, stranded, and without any supplies.

A mountaineering expedition turns disastrous when, without warning, two friends fall into an 80-foot icy crevasse.

A leisurely hike turns into a young woman's worst nightmare as she becomes lost, alone, and with no water in the maze of sub-canyons that make up the Grand Canyon.

While climbing in the French Alps, two friends find themselves trapped on a tiny ledge in a viscous storm.

A family becomes lost when their car is stranded out in the Arizona desert. When they are separated they independently battle to escape soaring summer heat, dehydration, hostile terrain, rattlesnakes and prowling gangs of smugglers.

Skipper Steve Conway, safety officer Roger Stone & 4 student sailors are competing in a 4-day yacht race from Texas to the Gulf of Mexico. In the dead of night & just 60 miles in their yacht, Cynthia Rose, springs a leak & capsizes.

Lincoln Hall attempted to climb Everest in 1984 but failed. Now, 22 years later, he has a second chance. Lincoln fulfills his lifelong dream, but is struck by altitude sickness known as a cerebral oedema.

In 2003, David Hunt & his daughter set off on a snowmobiling adventure in the Quebec backcountry. Disaster struck when David's snowmobile hit a snow drift & crashed into a ravine. His only chance of survival rested with his daughter.

On the final day of a New Year's Eve skiing trip, five young men accidentally trigger a huge avalanche. Miles from safety, a dream adventure turns into a living hell.