Some of the world's most incredible animal migrations take place in the Greater Yellowstone Ecosystem. Among them are a 120-mile pronghorn migration and nine elk herds with unique migration patterns. While on assignment in Yellowstone, Joe Riis was able to capture the awe-inspiring migrations that few tourists get to see. Click here to read more about pronghorn: http://animals.nationalgeographic.com... Click here to read more about elk: http://animals.nationalgeographic.com...
PRODUCER: Joe Riis
EDITOR: Jenny Nichols and Pongo Media
CINEMATOGRAPHY: Joe Riis
ADDITIONAL VIDEO: Jenny Nichols and Skip Armstrong
MAP RESEARCH: Arthur Middleton
MAP ANIMATION: Mass FX Media
FUNDED BY: George B. Storer Foundation, Bole & Klingenstein Foundation, and the National Geographic Society Expeditions Council