Video Details
Building Big: Tunnels
| Core Subject(s): | Science |
|---|---|
| Length: | 00:00:00 |
| Website: | https://www.uen.org/emedia |
| Usage rights: | Download and retain personal copies in perpetuity. |
Availability information for this program
What keeps a tunnel from collapsing? Tunnels have advanced from dangerous, claustrophobic passages to spacious, safe subterranean networks as roomy as shopping malls. Host David Macaulay takes viewers underground to explore the history and ingenuity behind some of the world's tunneling marvels.
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