tunnels

"Elementary readers will follow the sequence of the process taken to build an extension of a subway system, from the proposal, planning, tunnel digging, and construction of the train and tracks. A table of contents, glossary, further resources, and an index are included"--Provided by publisher.

"We have needed ways to cross valleys, rivers, and mountains for as long as there have been people on Earth. Over time, scientists and engineers began to understand the laws of nature that apply to bridges and tunnels. They understood the strengths and weaknesses of materials better, too--and began to create new ones, like concrete and steel. This . . . guide to bridges and tunnels explores unique examples of each, what they're made of, and all of the unexpected twists and turns taken in their development"--Provided by publisher.

Drizzt Do'Urden, exiled from the surface world, struggles with solitude as he seeks out a new home in the labyrinth of the Underdark and watches for dark elves in pursuit.

Explores the engineering challenges behind building tunnels, as well as the creative solutions found to overcome those challenges.

Thomas the Tank Engine and his friends find themselves trapped in a tunnel and must work together to find a way out.

Many structure and design ideas are taken from nature. This is an in-depth look at the structures and designs around the world.

Looks at how and why tunnels are built, discussing different types of tunnels, the machines that are used to build them and more.

This book explores the development and evaluation of scientific theories behind wormholes.

"...a narrative exploring two harrowing attempts to rescue East Germans by tunneling beneath the Berlin Wall, the U.S. television networks who financed and filmed them, and the Kennedy administration's unprecedented attempt to suppress both films."--Provided by publisher.

Explores the history of the underground transportation systems, including subways, tunnels, roads, and more.