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.
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.
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.
An Edinburgh professor and assorted colleagues follow an explorer's trail down an extinct Icelandic volcano to the earth's center.
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.
Farmer Al Falfa flies to Africa with the Royal Society of African Explorers to hunt in the jungle.
A mercenary-for-hire accepts a mission from a billionaire to capture a dangerous snake that could possibly help cure a terminal illness.
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.
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.
En el valle de la luna
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.
A young linguist named Milo Thatch joins an intrepid group of explorers to find the mysterious lost continent of Atlantis.
When scientists exploring the Amazon River stumble on a “missing link” connecting humans and fish, they plan to capture it for later study. But the Creature has plans of his own, and has set his sights on the lead scientist's beautiful fiancée, Kay.
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
Rock and Dr. Andrea travel up the Amazon to find out why the plantation workers have left their work in panic, allegedly because of attacks from Curucu, a monster who is said to live up the river where no white man has ever been before...
The discovery of a perfectly preserved caveman prompts a mad scientist to attempt a daring brain transplant.
A space expedition to Uranus is menaced by a giant brain that can make illusions come true.
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.
At the end of the 19th century, German archaeologist Professor Bohmann is searching for the remains of the legendary island Atlantis. But he is not the only one who is trailing the myth. His adversary, the British scientist Sir Grey claims to have already found Atlantis. In different masks and guises, he sets cunning traps to keep off his adversary from finding Atlantis.