High Quality Content by WIKIPEDIA articles! Land of the Lost was a 1974-1976 TV series presenting the adventures of the Marshall family (including Will and Holly and their father Rick, later replaced by their uncle Jack). The Marshalls become trapped in a pocket universe populated by dinosaurs, ape-like creatures called Pakuni, and lizard-like creatures named Sleestak. This article concerns the unusual geography of the Land and mysterious "technology" such as the pylons, crystals, heart, and other elements which control various aspects of the Land of the Lost.