Filled with amazing full-color and historical images, readers will explore the winding paths of the Paris catacombs, Chicago tunnels, and more! Tunnels and Passages dives into the origins, construction, and purpose of these underground sites. Historical, geographical, and cultural context encourages kids to learn about the events, people, and findings from each tunnel system. Aligned to Common Core standards and correlated to state standards. A&D Xtreme is an imprint of Abdo Publishing, a division of ABDO.