"Join Buddy Bison and his two new friends as they explore the majestic Yellowstone National Park. Breathtaking photographs of Yellowstone serve as the backdrop for the wacky adventures of a curious pair of twins, Elena and Christopher, who are spending the summer with their aunt Rosa, a park ranger... This charming tale is sprinkled with helpful tidbits about the park, weird-but-true facts about the animals, and more fun facts kids adore. A comprehensive afterword offers a short history of the park and ways kids can get involved in parks preservation"-- Provided by publisher.