Dogs love to explore. Mary is a springer spaniel, and she loves taking trips in the car and exploring places when she arrives. Come along on Mary's adventure to the world's first national park, Yellowstone, and experience the many wonders with her! Learn about the area's many wildlife species, the geysers, and the history of this special place. You can also write your own Outdoor Explorer Story! Includes activity pages to educate and encourage children to spend time in the outdoors near or away from home and vocabulary words to improve their reading and understanding of science.