On Tuesday, we posted our sixty-seventh photo challenge to see how well you knew Metro. I took photos of five Metro stations. Here are the answers. How well did you do?

This week we got 19 guesses. Ten got all five. Great work, Peter K, Mike B, Alex B, Justin…, FN, MZEBE, JamesDCane, Alex C, Dylan P, and Mr. Johnson!

Image 1: Twinbrook

The first image shows a view from the platform at Twinbrook. The clues here include the Hilton hotel, visible behind the train, and the Gull wing I canopy. The Gull I canopy is present at only 15 stations, so that narrows it down considerably. Many of you either recognized the Hilton or searched for it to come to a conclusion.

Fifteen got this one.

Image 2: Dunn Loring

The second image shows the platform stair/escalator bank at Dunn Loring. This part of the station was also featured in week 39.

One of the clues is the line of skylights, which are typical of the I-66 median stations. The sloped concrete roof (paralleling the escalators) at the top of the picture is also endemic to the I-66 stations. Additionally, the escalator-stair-escalator arrangement is fairly rare in the system.

One final clue is the sunlight streaming in at far right. Dunn Loring is oriented east-west, with the entrance at the west end. Peter K correctly surmised that I took this photo on the same day as the week 39 photo, with the setting sun shining down the tracks.

Twelve knew this one.

Image 3: Potomac Avenue

The third image shows the entrance to Potomac Avenue. The station’s escalator bank is housed in a small plaza north of Pennsylvania Avenue, and the rowhouses in the background should have helped you figure this out. Another clue: It’s also one of the stations without an entrance canopy.

Fifteen guessed correctly.

Image 4: Naylor Road

The fourth image shows Naylor Road. There are a couple of clues here. First, the segmented strip map that appears below the station name plate is the type installed on the Green Line extension to Branch Avenue. But of those stations, all are either underground or in a depressed cut, except for Naylor Road, the only elevated station.

Additionally, you can see the cloverleaf ramp from Branch Avenue onto Suitland Parkway in the background. The setting and strip map should have helped you narrow this down to Naylor Road station.

Fifteen guessed Naylor Road.

Image 5: Federal Center SW

The final image shows Federal Center SW. This entrance is one of the few under-building entrances where the escalators actually point into the sunlight (most point toward the building). The square openings above the entranceway are unique to Federal Center SW, so that should have been the lynchpin for your guess.

Eleven managed to figure this one out.

Next Tuesday we’ll have five more photos for you to identify. Thanks for playing!

Information about contest rules, submission guidelines, and a leaderboard 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.