Genre: Action adventure science fiction. Six youngsters in early teens,-in a small remote town, during summer, encounter Martians and secret USA government activities, and they experience a fantastic adventure involving an unexpected trip to Mars, where they encounter a remarkable underground world like the Carboniferous Era on Earth with dinosaur-like animals and a species of powerful, sophisticated, rather friendly aliens who help them against certain really sinister human villains, who work for an un-elected secretive shadow government on Earth.
13 parts