Why is this Giant Tortoise on a Volcano? | BBC Earth Science

David Attenborough gives some insight into the intriguing behaviours of the Galápagos giant tortoise. Best of Earth Science: http://bit.ly/EarthLabOriginals Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx