Message posted by AM-241 on December 12, 2007 at 13:24:31 PST:

"So tunnels are more practical if you can think up a smaller, more symmetric, wingless craft shape suitable for zipping out of a cylindrical tunnel."

Reminds me of the movie "Independence Day." Ha Ha.

Good point though. I'm sure our tunnelling capabilities have came a long way since the Cold War's minuteman launch tunnels, which were pretty big as well.

In Reply to: Re: Underground Runways posted by JB737 on December 12, 2007 at 4:29:03 PST:

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