An Edinburgh professor and assorted colleagues follow an explorer's trail down an extinct Icelandic volcano to the earth's center.
Four explorers are summoned to Peru by the brilliant physicist Dr Thorkel. They discover a rich source of radium and a half-mad Thorkel who shrinks them down to one-fifth their normal size when they threaten to stop his unorthodox experimentation.
A scientific expedition sets out for Borneo to seek a flower called the Blood Orchid, which could grant extended life. Meanwhile, they run afoul of snakes and each other.
The villainous Dr. Fu Manchu races against a team of Englishmen to find the tomb of Ghengis Khan, because he wants to use the relics to cause an uprising in the East to wipe out the white race.
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. Parker's beautiful daughter Jane arrives unexpectedly to join them. Jane is terrified when Tarzan and his ape friends abduct her, but when she returns to her father's expedition she has second thoughts about leaving Tarzan.
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. McBride's party find themselves in a world populated by primitive warriors and terrifying prehistoric creatures, all of whom they must evade in order to get back safely
Two Japanese scientists, Ushioda and Ochi, develop a bond with their sled dogs while on an expedition in Antarctica.
A mercenary-for-hire accepts a mission from a billionaire to capture a dangerous snake that could possibly help cure a terminal illness.
A young linguist named Milo Thatch joins an intrepid group of explorers to find the mysterious lost continent of Atlantis.
A German expedition is in the African jungles on an unidentified misson. During this mission one of the German explorers, Thoren, is attacked and captured by the local natives called the Botos.
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 deadliest — snake.
After a personal tragedy, Sarah joins her friends on a caving expedition in the Appalachian Mountains. But when a rockfall traps them deep underground, their adventure turns into a nightmare. As they search for a way out, the group discovers they are not alone—lurking in the darkness are savage, cave-dwelling creatures. With rising tension and dwindling trust, the women must fight to survive against both the predators and each other.
Modern treasure hunters, led by archaeologist Ben Gates, search for a chest of riches rumored to have been stashed away by George Washington, Thomas Jefferson and Benjamin Franklin during the Revolutionary War. The chest's whereabouts may lie in secret clues embedded in the Constitution and the Declaration of Independence, and Gates is in a race to find the gold before his enemies do.
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 due to the proximity of a heavy snow storm. He ties his dogs to be rescued after, but the mission is called-off and the dogs are left alone at their own fortune. For six months, Jerry tries to find a sponsor for a rescue mission.
Harry Holt returns to Africa with his friend Martin Arlington to head up a large ivory expedition.
A space expedition to Uranus is menaced by a giant brain that can make illusions come true.
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 believes in life on the surface and where she and her father are taken for spies.
Explore the mysterious and dangerous home of the king of the apes as a team of explorers ventures deep inside the treacherous, primordial island.
A kindly English botanist and a gruff American promoter lead an expedition to the Himalayas in search of the legendary Yeti.
In the early 1800s, a group of fur trappers and Indian traders are returning with their goods to civilization and are making a desperate attempt to beat the oncoming winter. When guide Zachary Bass is injured in a bear attack, they decide he's a goner and leave him behind to die. When he recovers instead, he swears revenge on them and tracks them and their paranoiac expedition leader down.