QOD 10/13/11 Tunnels under Las Vegas

I missed the question of the day on October 13, 2011, It was about the tunnels under Las Vegas. Can anyone give me a quick summary? Thanks.
Didn't catch the QOD, but assume it refers to this book.
They recommend not going down there without armed guards and scuba gear.
Harrah's houses their Gold Lounges down there.

Quote

Originally posted by: friedmush
Harrah's houses their Gold Lounges down there.


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