This volume in the National Laboratories: Scientists in National Parks series (6 titles) digs deep into the historical and scientific significance of Carlsbad Caverns, found in the Chihuahuan Desert. Discovered first in 1898, the long, deep caverns have provided geologists, paleontologists, and microbiologists opportunities to study and discover new information about the Southwest. Boldly photo-illustrated with maps, period images, and pictures of scientists at work, the large-trim chapters take readers through the findings of the various scientists, underscoring the importance of each. The real selling points here are the variety of scientific fields showcased and the hands-on components; suggested comprehension and extension activities listed at the beginning of the text guide critical reading, while an ending activity allows readers to create their own cavern experience. A well-designed resource for serious STEMers. -- Booklist, April 2019.