Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Uploaded on Mar 11, 2009
Playlist: http://www.youtube.com/view_play_list... Find out more: http://www.bbc.co.uk/naturesgreatevents The great flood in the Okavango turns 4,000 square miles of arid plains into a beautiful wetland. Elephant mothers guide their families on an epic trek across the harsh Kalahari Desert towards it, siphoning fresh water from stagnant pools and facing hungry lions. Hippos battle for territory, as the magical water draws in thousands of buffalo and birds, and vast clouds of dragonflies.