Avengers: Endgame star Mark Ruffalo shared two new behind-the-scenes images from the film, featuring him with co-stars Tom Holland and Don Cheadle in a peculiar position.

In the photos, which Ruffalo posted Twitter, all three Marvel stars can be seen sporting their motion capture suits. They are standing in a triangle pattern with their hands meeting in the center. "What's happening here? Wrong answers only," Ruffalo wrote.

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As is to be expected, Ruffalo's tweet spawned a variety of interesting replies, with one of the prevailing fan theories being that the three actors were playing "London Bridge" when photo was taken. It's unclear exactly which scene they were preparing for at the time, but the trip appeared to be in high spirits.

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Directed by Joe and Anthony Russo, Avengers: Endgame stars Robert Downey Jr. as Iron Man, Chris Evans as Captain America, Mark Ruffalo as Bruce Banner, Chris Hemsworth as Thor, Scarlett Johansson as Black Widow, Jeremy Renner as Hawkeye, Brie Larson as Captain Marvel, Paul Rudd as Ant-Man, Don Cheadle as War Machine, Karen Gillan as Nebula, Danai Gurira as Okoye and Bradley Cooper as Rocket, with Gwyneth Paltrow Pepper Potts, Jon Favreau as Happy Hogan, Benedict Wong as Wong, Tessa Thompson as Valkyrie and Josh Brolin as Thanos. The film is set for release on Digital HD on July 30 and Blu-ray and 4K UHD on August 13.