Two teenage twin siblings, Rachel and Theo, on a summer vacation in Aukland visiting their aunt and uncle, meet a certain Mr. Jones, a mysterious man who helped find them when they got lost... See full summary »






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Series cast summary:
Kirsty Wilkinson ...
 Rachel (8 episodes, 1981)
Lance Warren ...
 Theo (8 episodes, 1981)
Roy Leywood ...
 Mr. Jones (8 episodes, 1981)
William Johnson ...
 Mr. Wilberforce (8 episodes, 1981)
William Ewens ...
 Ricky (8 episodes, 1981)
Glynis McNicoll ...
 Aunt Noeline (8 episodes, 1981)
Noel Trevarthen ...
 Uncle Clarry (8 episodes, 1981)
 Wilberforce Family (5 episodes, 1981)
Paul Owen-Lowe ...
 Wilberforce Family (5 episodes, 1981)
 Wilberforce Family (5 episodes, 1981)
Richard von Sturmer ...
 Wilberforce Family (5 episodes, 1981)
Rodney Newman ...
 Wilberforce Family (5 episodes, 1981)
Timothy C. Lee ...
 Wilberforce Family (4 episodes, 1981)


Two teenage twin siblings, Rachel and Theo, on a summer vacation in Aukland visiting their aunt and uncle, meet a certain Mr. Jones, a mysterious man who helped find them when they got lost in the woods eight years earlier. Mr. Jones turns out to be an alien fighter from a distant planet who wants their help in fighting an alien giant slug family of eight members led by a certain Mr. Wilberforce who have arrived on Earth with plans for world domination. Written by Matthew Patay <>

Plot Summary | Add Synopsis

Plot Keywords:

twin | new zealand | volcano | See All (3) »





Release Date:

1983 (USA)  »

Also Known As:

A hegy gyomrában  »

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Did You Know?


The series aired in The Netherlands from 1987 till 1988 under the title: Moddermonsters, which translates into mud monsters. See more »


Rachel Matheson: Well, when all you have to look forward to is being nothing, maybe oblivion is the only thing we can offer them.
See more »


Remade as Under the Mountain (2009) See more »

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User Reviews

Saving the World
23 January 2000 | by (Australia) – See all my reviews

Under the Mountain is a science fiction adventure, based on the novel by Maurice Gee. Set in Auckland, New Zealand, two red haired twins called Rachel and Theo are staying with their Uncle and Aunt for a holiday.

> An old man called Mr Jones is interested in the twins for a special reason. Mr Jones is the last surviving member of an alien civilization. His people were at war with another race of creatures who go from planet to planet, turning worlds into mud and stone. The Earth will be next unless the twins can stop them. The invading aliens are shapeless, tentacled creatures who can assume human form. They are known only as the Wilberforces...

This was a very good show. The first time I saw Under the Mountain I was actually living in New Zealnd. I recognized a lot of the places Rachel and Theo went to because I was born in Auckland: the familiar volcanoes Rangitoto and Mt Eden, the district Takapuna, even the library. When I saw it again some years later I actually felt home sick. The story was also good because it wasn't too predictable. You actually wonder if Earth really has a chance when the future depends on two young twins.

7 of 7 people found this review helpful.  Was this review helpful to you?

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