On Monday, we posted our twenty-fifth photo challenge to see how well you know Metro. I took five photos in Metro. Here are the answers. How well did you do?

This week, all the photos were taken at L’Enfant Plaza station. But that didn’t fool you. Of the 84 guesses we got on this post, 80 of you got all five correct. Great work!

Image 1: L’Enfant Plaza

The first image shows the switch indicator that is mounted on the wall of the southern mezzanine. This tells passengers (and the operator) which direction the switch is set. All of the Metro stations located just before a place where lines diverge have one of these. Everyone got this one right.

Image 2: L’Enfant Plaza

The second image shows a sign on the wall at L’Enfant Plaza. The hint here is that because the sign references the “opposite platform”, it must be L’Enfant since that’s the only underground station shared by the Green and Yellow lines with side platforms. 82 of you got this one right.

Image 3: L’Enfant Plaza

The third image shows the Greenbelt-bound platform at L’Enfant Plaza. The lighted circle visible at the bottom of the picture is a map of the station. There’s also one on the Huntington platform, but those two are the only ones in the system. 80 of you got this one right. One person commented that it was from the 90s, but that’s not the case. The map is still there, and I took the picture three weeks ago.

Image 4: L’Enfant Plaza

The fourth image shows art at L’Enfant. The vault above the Blue/Orange/Silver lines has one of these at each end. They show a dog wearing a spacesuit. You can easily see these above the fare control area at the exits to L’Enfant Plaza (9th & D) and D between 6th and 7th. 82 of you knew this one.

Image 5: L’Enfant Plaza

The final image shows what I think is one of the more interesting places on Metro: The dummy mezzanine at L’Enfant Plaza. It looks like a standard side platform mezzanine, but the difference here is that it doesn’t actually connect to an exit. However, because the upper level has side platforms, the mezzanine is essential to allowing customers to transfer between northbound Green trains and southbound Yellow trains and vice versa. I believe it’s possible for WMATA to add a new entrance near HUD using this mezzanine should the need ever arise. 80 of you got this one right.

Several of you made the comment that this was some sort of trick question. I can assure you it was not intended as such. Every image should stand alone, and if you can identify it, great. In this case, I actually tried to make sure the images were somewhat easy, since I was afraid people would second-guess themselves. To date, I’ve never featured one station more than once in the same set.

I’ve also been somewhat worried that people were losing interest, because the number of guesses has been steadily falling over the past few weeks. But from the strong response to this post, my conclusion is that most people only guess when they’re reasonably certain.

At any rate, great work. You all apparently know L’Enfant Plaza very well. Thanks for playing!

Matt Johnson has lived in the Washington area since 2007. He has a Master’s in Planning from the University of Maryland and a BS in Public Policy from Georgia Tech. He lives in Dupont Circle. He’s a member of the American Institute of Certified Planners, and is an employee of the Montgomery County Department of Transportation. His views are his own and do not represent those of his employer.