tunnels

Old Man sends Dark Man into the tunnels to find and extinguish a magic flame, the Fire of Doom, an evil gateway for demons.

Uses question and answer format with pictures to explain elements and principles of structural engineering, the field that includes the design and construction of bridges, tunnels, and buildings. Shows how readers can build their own structures to scale.

Discusses how tunnels are built, from planning and excavation to construction to site design.

Describes the techniques and obstacles involved in digging and building tunnels, from early quanaats to the thirty-mile Seikan Tunnel in Japan.

Discusses how people have used caves, mines, and tunnels to explore, utilize, travel through, and inhabit the interior of the earth.

An illustrated overview of some of the world's biggest, tallest, longest, and deepest structures, explaining the physics behind the designs, and describing how and why they were built.

Discusses the history, purpose, and construction of the Chunnel, a railroad tunnel that crosses the English Channel, uniting England and France.

Traces the history of tunnel-building in America, from the earliest days of the Schuylkill Navigation Tunnel to the complex technology of today's immersed-tube tunnels.

Describes different types of tunnels and how they are made.