In the heart of Africa, three intrepid adventurers are desperate to find the fabulous diamonds of the lost city of Zinj. They encounter the Kigani cannibals, flaming volcanoes and ferocious gorillas - and Amy, the cuddly gorilla who's fluent in sign language.

In the heart of Africa, three intrepid adventurers are desperate to find the fabulous diamonds of the lost city of Zinj. They encounter the Kigani cannibals, flaming volcanoes and ferocious gorillas - and Amy, the cuddly gorilla who's fluent in sign language.