Rick Marshall and his children Will and Holly are on a weekend expedition rafting down a river when an enormous earthquake diverts them to an eclectic alien world inhabited by dinosaurs, chimpanzee-like cavemen called Pakuni, and aggressive, humanoid lizard creatures called Sleestak.

Cast:Spencer Milligan, Wesley Eure, Philip Paley, Kathy Coleman,

Genre:Action & Adventure, Sci-Fi & Fantasy, Family, Comedy,

country:United States of America,

Production:Sid & Marty Krofft Television Productions,