Rev...
I was thinking, had I been there at that time, an escape or storage tunnel would surely have been a very good idea.
The BUILDING of such tunnels, on the other hand, is a whole different topic. That topic, is what interests me most... because tunnels might deal with basic human survival instinct.
To put it another way, tunnels must have been/are, very very useful... e.g the "undisclosed location"?
Jerry, we see eye to eye.
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