Keyword Underground Cavern

A man with an unknown disease travels to an island with his girlfriend where his relatives once lived, hoping to find a cure to his illness. Although his relatives were all thought to be dead, he finds them living underground.

El Topo decides to confront warrior Masters on a trans-formative desert journey he begins with his 6 year old son, who must bury his childhood totems to become a man.

A boy tries to stop aliens that have taken over his town and are brainwashing its inhabitants.

A group of scientists travel to a remote island to study the effects of nuclear weapons tests, only to get stranded when their airplane mysteriously explodes. The team soon discovers that the tests have given rise to crabs mutated into intelligent, impervious, telepathic giants intent on increasing their numbers by breeding, then travelling to populated areas to feed, and which do not intend to be stopped by their discoverers.

A student and her photographer boyfriend visit an island off of Massachusetts to research a hotel supposedly haunted by a witch.

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

The Three Mesquiteers are forced to track down a train robbery ring after some of the gang hijack their truck for a getaway and the police conclude they are part of the gang, an identification which is just fine with the gang's nameless chief.

While on a mission to locate three missing soldiers, a team of reconnaissance marines encounter a blood-spattered Iraqi stumbling through the desert. After following the distraught man into the depths of an insurgent cave, the marines make a horrifying discovery bringing them face-to-face with an ancient evil.

A woman leads an expedition into a remote jungle to find her long-lost brother, but instead finds a mad scientist who has created a fungus monster that feeds on the local inhabitants.

The Secret World of Og is a children's adventure about three young girls who venture into an underground cavern beneath their playhouse to look for their lost baby brother. There, they discover a land of little green people who are enamored by the world above but won't allow anyone to leave their cavern for fear they might "tell".

The Mandrin Cave in the Rhône Valley is a fascinating excavation site. Archaeologist Ludovic Slimak discovered fossils and flints here, proving that Neanderthals inhabited the cave for over 80,000 years. The first Neanderthal in France for half a century was also unearthed in the cave: He was given the name Thorin.

For forty days, a group of fourteen volunteers led by explorer and researcher Christian Clot lived independently in a cave in Ariège. Immersed in the cave, this is the story of an incredible collective human and scientific experience.

There are some places on earth where the land just seems different, and Blind Frog Ranch in eastern Utah is one of those places. Locals say the land is cursed. That it's trying to hold on to something.

The Secret World of Og is a children's adventure about 4 children who venture into an underground cavern beneath their playhouse to look for their lost baby brother. There, they discover a land of little green people who are enamored by the world above but won't allow anyone to leave their cavern for fear they might "tell".