Revealing the Secret World of Yellowstone’s Wildlife

Yellowstone and its wildlife have long helped define the American landscape. For two years, biologist Arthur Middleton and photographer Joe Riis immersed themselves in the most rugged backcountry to discover and share—for the first time—how the animals of Yellowstone migrate.

Arthur Middleton and Joe Riis are 2016 National Geographic Adventurers of the Year. 
Click here to read moresee photos, and vote every day for the People’s Choice Adventurer of the Year.