what was that one movie based from a book about a girl and her grandpa that end up escaping an erupting volcano through a secret passage

On a quest to find out what happened to his missing brother, a scientist, his nephew and their mountain guide discover a fantastic and dangerous lost world in the center of the earth.

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

Sean Anderson partners with his mom's boyfriend on a mission to find his grandfather, who is thought to be missing on a mythical island.

A Native American teenager named Manu spends the summer with his grandfather high in the desert mountains. As a terrifying doom approaches, Manu must embrace his remarkable destiny and take on an incredible responsibility if he and his family are to thrive and survive.

A boy, along with his companion, explores a secret passage.