Kids will learn about the history of tunnels with Engineer It! Tunnel Projects. They will discover how tunnels are built. Then, build their own train tunnel, underwater tunnel, and more. Each project has color photos and easy-to-follow instructions. Young crafters will be budding engineers in no time!

What is a tunnel? -- How people use tunnels -- Building tunnels -- Materials -- Undersea tunnel -- Train tunnel design -- Cut-and-cover construction -- Amazing aqueduct -- TBM puzzle game.