Land of the Lost is a 1974-1977 NBC Saturday morning Science Fiction kids' program created by David Gerrold and produced by Sid and Marty Krofft Productions. A small family of outdoorsy tastes are thrust into a Lost World that initially appears to be some kind of "Hollow Earth" scenario, but later turns out to be a pocket universe. The Land of the Lost is a tropical jungle home to a wide variety of creatures long extinct on Earth including an amusing family of hominids and several large and threatening dinosaurs. And in an ancient ruined city, they find a race of aggressive but light-sensitive insect-lizard people called "Sleestaks" by a mysterious message written in English on a wall near its entrance.