The Lost Zeppelin

James Parker and Harry Holt are on an expedition in Africa in search of the elephant burial grounds that will provide enough ivory to make them rich....

With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.

During World War I, a German U-boat sinks a British passenger ship and takes the survivors aboard. After getting lost in fog, the submarine surfaces...

Explorer Thor Heyerdahl and his ten-man crew sailed their reed boat, the Tigris, over routes he believes were followed by Sumerian traders 5,000...

Major Ben McBride organizes a mission to the Antarctic wastes to search for his friend who has been missing in the region for several years....

A military explorer meets and befriends a Goldi man in Russia’s unmapped forests. A deep and abiding bond evolves between the two men, one...

A 'National Geographic' film crew is taken hostage by an insane hunter, who takes them along on his quest to capture the world's largest — and...

After a personal tragedy, Sarah joins her friends on a caving expedition in the Appalachian Mountains. But when a rockfall traps them deep...

In the Antarctic, after an expedition with Dr. Davis McClaren, the sled dog trainer Jerry Shepherd has to leave the polar base with his colleagues...

When scientists exploring the Amazon River stumble on a “missing link” connecting humans and fish, they plan to capture it for later...

A mercenary-for-hire accepts a mission from a billionaire to capture a dangerous snake that could possibly help cure a terminal illness.

When her archaeologist father disappears on an expedition, Wanda sets out to look for him. What she finds is a secret underground world, where no one...