The Quest to Protect California’s Transcontinental Railroad Tunnels
smithsonianmag.com
smithsonianmag.com
Great Pyramid? What good is it? Pile of rocks!
The tunnels are mute testament to human endurance, ingenuity, and grit. Those few despised people did what was then considered impossible. The least we should do is honor their memory.
Edit: And that is what they're doing actually with them.
https://en.wikipedia.org/wiki/Pressure_system#Low-pressure_s...
I would expect there to be constant wind in a tunnel that passes through the Rocky Mountains, flowing from the end with higher barometric pressure. Is it possible to put a turbine in the tunnel and use it to generate wind power?
Details from Wikipedia: "The cross section of a tunnel face was a 16-foot-wide (4.9 m), 16-foot-high (4.9 m) oval with an 11-foot (3.4 m) vertical wall."