A woman descending Mount Everest watches as her fellow climbers begin to die around her and she wonders why she climbs the mountain in the first place.

A backcountry guide in British Columbia generally turns a blind eye as his clientele traffic drugs into the United States — but he begins to realize that his newest clients are traveling with cargo far more dangerous than drugs.

When a day hike for people 60 and older has to turn back midway through their hike in Sequoia National Forrest, the hiking leader finds himself at the base of the trail without his wife and without his former friend, both of whom had accompanied him on the trail. With the company of an over-eager widow, the man finds himself contacting search and rescue and waiting to see what morning will bring.

A man accompanies two climbing experts up the Alps mountains. Though he decides to stay behind, the others continue without him in hopes of reaching the summit.

When a volcanic eruption impedes their plans to go back home to California, a middle-aged data analyst and his energetic mother find themselves trapped in Iceland, their mutual discomfort toward one another prolonged.

While hiking with his two young children, a man falls to his doom in a cavern called the Bottomless Well, leaving his son and daughter to race to save his life.

Two rich, arrogant men working in tech find themselves climbing Mount Everest. But as the dangers of the mountain, both natural and supernatural, encroach they must fight to survive.

A quarreling married couple takes a trip to the mountains in Colorado in an attempt to save their marriage, but disaster strikes when they see a pair of young mountain climbers fall, leading to a perilous rescue mission.

A party traveling west to California experiences unspeakable horror when they become trapped on an impassable trail in the winter.

Two cartographers reach a geographic boundary and discuss what they see.