the MCU timeline after years of the reboot being in development. While a handful of plot details have been revealed for The Fantastic Four: First Steps, another major clue may have been discovered thanks to a couple of explorers.

While The Fantastic Four: First Steps has wrapped principal photography, some of the sets have clearly not been taken down yet, as The Daily Mail released new photos, as well as a video, of an unknown underground set that was completely abandoned after filming was finished. The photos also include maps from production, which was under the name "Blue Moon," giving a deeper look at this set piece at the Middleton mine in the Derbyshire Dales.

Click here to see The Fantastic Four: First Steps set photos and video of the mysterious abandoned underground set.

What The Fantastic Four: First Steps' Set Video Mean For The Reboot

While time will tell if Marvel Studios is taking down that set from The Fantastic Four: First Steps sooner rather than later, it wouldn't be shocking if the reports floating around about it increase the pace of that happening. Whether or not this will be a crucial element of The Fantastic Four: First Steps story remains to be seen. However, the discovery of it could be teasing a classic Fantastic Four villain to be making their MCU debut in the 2025 installment.

Even though it hasn't been announced, The Fantastic Four: First Steps underground set could suggest that Harvey Rupert Elder, a.k.a. Mole Man, is showing up in the film in some capacity. While Galactus will reportedly be the main villain of the story, that doesn't mean the Phase 6 movie couldn't feature other Fantastic Four villains in ing roles. Given there are a handful of actors who have ed the reboot in mystery roles, there is always the possibility that one of them is portraying Mole Man.

Our Take On The Fantastic Four: First Steps' Set Video

Mole Man with his staff and Moloids in Marvel Comics

Based on what was seen in The Fantastic Four: First Steps set photos and video, it wouldn't be shocking if this is indeed a tease of Mole Man in the MCU, as this could easily be his lair for the movie. Time will tell how long fans will have to wait to learn whether or not Mole Man is actually in the movie, or if this location is meant to be setting up something else in the film. Hopefully, whenever the first The Fantastic Four: First Steps trailer is released, the underground set will be one of the elements that gets highlighted in the footage.

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The Fantastic Four: First Steps
Not Yet Rated
Adventure
Sci-Fi
Superhero
Release Date
July 25, 2025
Director
Matt Shakman
Writers
Jeff Kaplan, Josh Friedman, Ian Springer, Eric Pearson, Stan Lee
Producers
Jamie Christopher, Kevin Feige, Louis D'Esposito, Tim Lewis
  • Headshot Of Pedro Pascal In The 30th Annual Screen Actors Guild Awards
    Reed Richards / Mr. Fantastic
  • Headshot Of Vanessa Kirby
    Vanessa Kirby
    Sue Storm / The Invisible Woman
  • Headshot Of Joseph Quinn In The Premiere Of A Quiet Place: Day One
    Johnny Storm / Human Torch
  • Headshot of Ebon Moss-Bachrach
    Ebon Moss-Bachrach
    Ben Grimm / The Thing

The Fantastic Four: First Steps depicts Marvel's First Family navigating their roles as heroes amidst a 1960s-inspired, retro-futuristic world. As they defend Earth from Galactus and the enigmatic Silver Surfer, they must also uphold the strength of their family bond.

Studio(s)
Marvel Studios
Distributor(s)
Walt Disney Studios Motion Pictures

MCU Movies

Source: The Daily Mail