On Tuesday, we featured the 165th challenge to see how well you know the Metro system. Here are the answers. How’d you do?

This week, we got 17 guesses. Ten of you got all five. Great work!

The theme this week is that all of these stations are associated with pocket tracks. At National Airport and West Falls Church, the pocket is in the station and has platform access. At the other three, the pocket track is beyond the station and trains can relay there to change direction.

Image 1: Silver Spring

The first image looks northward from Silver Spring. The Purple Line guideway can be seen taking shape overhead. That should have been your primary clue.

Sixteen of you knew this one.

Image 2: Stadium-Armory

Stadium-Armory was the next station. In this view, DC General is visible behind the escalator canopy. That’s really the only clue, but it was enough for most of you.

Thirteen of you got this one right.

Image 3: Farragut North

The third image shows the closed northern entrance to Farragut North. This is one of several entrances Metro has closed to reduce cleaning and staffing during the Covid-19 panedemic. Clues include the three escalator full-platform width entrance, which is present at only a few stations, including Stadium-Armory and Takoma. The flat roof is also a clue, since the very northern end of Farragut North is not vaulted.

Eleven of you figured this one out.

Image 4: West Falls Church

The fourth image looks north from the parking garage at West Falls Church, toward the station. Close examination reveals the dual skylights running along each platform. West Falls Church has a unique take on the High Peak style, as it has two island platforms and three tracks.

Thirteen of you guessed correctly.

Image 5: National Airport

The final image didn’t give you a lot to go on. It looks south from the Greenbelt/Largo platform at National Airport, with the switch for the pocket track clearly visible. In the distance, the lighted circle is the ferris wheel at National Harbor.

Fifteen of you came to the correct conclusion.

Great work, everyone. Thanks for playing! We’ll be back in two weeks with challenge #165.

Information about contest rules and submission guidelines is available at http://ggwash.org/whichwmata.

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.