Caves are fun to explore, and underground mines provide jobs for many people. But entering underground spaces has potentially deadly risks. This book examines the experiences of people who have faced death in these spaces and survived. Readers will learn about the unique features and dangers of caves and mines and discover how to prepare for and stay safe on an adventure in these places. Features include a glossary, references, websites, source notes, and an index. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.