- Park Smarts For Kids books are fun for ages 4 and up. Children love to explore the coloring pages and solve the puzzles. Adults enjoy helping the children learn more about our National Parks and Monuments. Content is designed to promote interaction among kids, as well as mutual learning for parents, grandparents and adult caregivers. In this series, explore your knowledge of Oregon Caves National Monument! Color pictures, solve puzzles and connect the dots. Search and find objects that you may see at the Oregon Caves National Monument.