Discover How the World’s Greatest Tunnels Are Built
Tunnel boring machines, underground construction and remarkable engineering
Go underground in an illustrated, story-led engineering adventure for curious readers ages 7–12. Children discover how teams plan, excavate and construct enormous tunnels beneath cities, mountains and water.
An Engineering Adventure Beneath the Surface
Dig Deep! introduces young readers to the machines, workers and decisions behind the world’s greatest tunnels. Children follow projects from geological surveys and route planning to excavation, lining and the breakthrough moment.
The accessible narrative blends engineering, geology and construction science. It is designed for independent reading, family reading, classroom enrichment and homeschool science.
Best for: Children ages 7–12 who enjoy machines, construction, transportation, underground places and discovering how things are built.