I've been at the University of Virginia for 5 years now. I've walked on campus, then, many hundreds of times. It's a pretty campus. Since my most recent move, I've adjusted my walking path to the office. Now I typically walk along some of the "garden" paths, just off of "The Lawn".
In case you're curious about those wavy walls, that was Mr. Jefferson's idea. And we couldn't be more proud.
But in all of my walks, up until just recently, I never noticed anything interesting about those little posts lining the driveway in the picture above. Then, from above: