Learn about the park's geology, plant and animal life, and some of its main features. Discover the boardwalk trails, erupting geysers, and hot springs that make this national park an exciting place to visit. Explore glaciers, geysers, and glorious views in some of the most famous national parks in the United States. Travel through the Grand Canyon on the back of a mule, hike up the Rocky Mountains, or watch Yellowstone's geysers erupt. Discover why these parks are some of the coolest places in the country! Book jacket.