An Edinburgh professor and assorted colleagues follow an explorer's trail down an extinct Icelandic volcano to the earth's center.

After his tribe of herbivorous dinosaurs moves to the carnivore-free Peaceful Valley, young Littlefoot and his friends chase after a pair of dangerous dinosaurs stealing an egg from the village. While running, they accidentally cause a landslide that opens up their home to outsiders. When the egg they bring back and hatch reveals not o...

Welcome to lush Dinosaur Island, where a tribe of gorgeous cavedwelling warrior women satisfy the exotic fantasies of five downed military airmen. Fearsome battles with the island's ferocious maneating dinosaurs are the only disruption of their seductive pleasures on this island paradise. Narrowly surviving with their lives, the rugged...

Like in the novel of Jules Verne four persons try to get to the centre of the world by entering into a world of caves by a volcano. On their way they discover among other things also prehistoric animals like some dinosaurs,

In 1960, four American scientists travel to a planet that has just entered Earth's solar system to see if it's able to support an Earth colony. They find an oxygen atmosphere, a lush earth-like forest, and earth-like animals living around a potable fresh-water lake.