This is the kind of thing I’d normally use as a bonus picture but I’m so baffled by it that I want to make sure everyone sees it.
So I was standing here the other day, whiling away a bit of time for reasons I don’t need to explain right now. This is, of course, the plaza between Sewall and Lovett halls:
At one point I glanced down and was astonished to see this little marker embedded in one of the stone tiles:
It’s very small, no more than a couple of inches, so it’s not hard to understand why I’d never noticed it before. Someone obviously went to some trouble to install it, though, cutting out a section of the stone to make room for it. So what on earth is this and why is it here? Anyone?