@singernews Looks like those Rose Line things in DaVinci Code. Maybe Ron Howard will use them to film Lost Symbol (which was set in DC)?
These things, embedded in city sidewalks, fascinate me. Anyone know how they are used?? #HowGovtWorkspic.twitter.com/d6ifhW2MTb
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@kmac23va that's EXACTLY the reference that came to my mind
End of conversation
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