PBS
Pbs Learning Media: The Tunnel Challenge
This interactive activity, from the Web site developed for the PBS series "Building Big," explores tunneling and the tools and methods used to do the job.
PBS
Wgbh: Building Big: Tunnels
A collection of resources about tunnels that includes basic facts about tunnels, challenges faced by tunnel diggers, famous tunnels from around the world, and a lab that helps you understand the kinds of forces that keep tunnels from...
Other
Cal Earth the California Institute of Earth Art and Architecture
Founded and directed by the internationally renowned architect and author Nader Khalili, this institute works to create homes from the earth using such materials as sand, clay, and dirt. Its mission is to create tree-less places for...
Other
Spiegel Online International: Switzerland Celebrates Longest Tunnel in the World
Switzerland is the proud owner of the claim to fame of having the longest tunnel in the world now that the Gotthard Base Tunnel has broken through the final partition of rock. Article provides information on the problems encountered as...