Robin Koontz 
Natural Laboratories: Scientists in National Parks Carlsbad Caverns [PDF ebook] 

While reading this book, young learners will explore the scientific research underway in Carlsbad Caverns National Park, the site of one of the best-preserved ancient fossil reefs on Earth. With more than 100 spectacular caves, this park offers scientists and researchers the opportunity to study and explore countless unique cave formations. The Natural Laboratory: Scientists in National Parks series takes a look at the research and responsibilities of scientists working in U.S. national parks. Each 7.5" x 10" photo-filled book explores the topography of the park, its natural resources, the specific projects that have been undertaken there and why these projects are significant. Each 48-page book in the series also features quotes from scientists working in the featured park, to better explain to readers how and why things are done