Keyword Underground Cavern

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.

In the early hours of the night, young David Maclean sees a flying saucer land and disappear into the sand dunes just beyond his house. Slowly, all of the adults, including his once loving parents, begin to act strangely.

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

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 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.

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

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.

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.

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 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.

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".