60 Minutes journeys to a remote clearing in Africa that's home to a rare species of forest elephant. These mysterious beasts are remarkable enough but it's what they're teaching us about how animals communicate that's truly amazing.
For two decades, one dedicated scientist has been recording every sound, every roar and grumble these jungle giants make, trying to decipher their language. She is now interpreting their exchanges. And she's even helping to compile an elephant dictionary.
Bob Simon hiked into the rainforest to meet this modern-day Dr Doolittle.
Watch the video.