Anthony Ward

Made for ten thousand dollars over 5 years this film shows both the signs of lack or resources and inventiveness in attempting to overcome the low budget. The script is largely made up of nursery rhymes used as and a kindergarten teacher. The episodic narrative mixes staged with actuality footage. It won two major awards in 1969.

Early 20th-century adventurers find themselves fighting for survival after their hot-air balloon crashes into a remote part of the Amazon, stranding them on a prehistoric plateau.