A celebration of the life and legacy of Echo, the world\'s most famous elephant, who was born in 1945 and died in 2009, and who Natural World followed for the last 20 years of her life. The timing of Echo\'s death could not be worse. The wise old matriarch had guided her family for half a century but the cruellest drought in living memory devastated her home under the shadow of Kilimanjaro.

Botswana\'s elephants are doing very well, too well perhaps. People are worried that too many elephants will damage their fragile desert home and have suggested that up to 60,000 should be culled. Researcher Mike Chase studies ancient elephant migration routes - he has tracked them across vast deserts, desolate salt pans, and Angolan minefields. Now he thinks he has a plan that could safeguard their future.

Deep in the rainforest of Central Africa lies an elephant oasis - a remarkable place that holds the key to the future for Forest Elephants. Over the last 20 years, Andrea Turkalo has been studying these enigmatic giants, getting to know over 4,000 intimately. She has begun to unravel the secrets of their complex social lives and the meanings of their unique vocalisations. New acoustic research is shedding light on the many mysteries that still surround forest elephant society.

A preview of Natural World: Jungle Gremlins of Java, showing some of the mysteries that make this primate so special.