Postcard US-6248310 Karuna_Rose U.S.A. 10 Sep, 2019 10 days 5,018 miles Ann66 Netherlands 20 Sep, 2019 Loading map... Ann66 said: posted over 4 years ago Yellowstone National Park Bison are the largest mammals in Yellowstone National Park.They can run approximately 30 miles per hour. Haynes Picture Shops, circa 1922 You need to sign in to leave a comment!