Warning: Contains Spoilers
Those who have followed the Marvel Cinematic Universe for the past 11 years know that it’s always worth staying behind for a post-credits scene.
Such moments offer clues into what fans can expect from future films, and often spark the most theories during post-cinema drinks.
Of course, this time around has been different, with Avengers: Endgame concluding the 22 films in the Infinity Saga and making way for new adventures.
The first era of the Marvel Cinematic Universe is complete, with an exciting new phase about to begin.
And so – with the epic, narrative blending plot tied up with a universe-sized bow – there wasn’t a post-credits scene in the usual sense.
However, those who chose to stay put in their cinema seats until after the credits had rolled were rewarded with a snippet of additional audio to mull over.
As the Marvel logo rose up on the screen, emotional audience members heard the distinct sound of metal clinking against metal.
I think there *is* something post-credits in #AvengersEndgame
I swear over the final Marvel image, I heard the sounds of Tony Stark hammering his original #IronMan armour
In a cave…
— Damien Larkins (@mrdlark) April 25, 2019
The hammering sound you hear at the end of #AvengersEndgame is the same one from iron man, Tony building mark 1, and I think it's the most poetic thing ever done in history of cinema
— ʌᴉɥS is in mourning (@iron_widow) April 27, 2019
They just let us all sit and cry until the movie completely stopped. Though there is hammering with the Marvel Logo but that's all you'll get if you wait. #AVENGERSENDGAME
— Chewy1999 (@HananEisele) April 27, 2019
#AvengersEndgame could not have been any better. There was 😃, 😪, 😂, 🥺, 🥳 and 👏👏👏. The question now is @MarvelStudios what was the hammering of iron after the credits? What next do you have up your sleeves???
— Arlene Keefer (@stargazer_za) April 27, 2019
Although Marvel have not yet confirmed what exactly this noise is, or what it signifies, fans with long memories and an ear for detail have a pretty good idea.
Tony Stark’s self-sacrificing death brought the first decade of the Marvel Cinematic Universe full circle, and many believe this sound harked back to the very beginning of the saga.
The sound is thought to be that of Tony hammering out his mask in 2008’s Iron Man, a touching tribute to the fallen hero and to the Infinity Saga in its entirety.
Check out the original hammering scene for yourself below and see if it rings any bells:
This would certainly make a lot of sense, however other fans have offered alternative theories as to the origin of this metallic noise.
Some have argued it could well be the noise of Eitri the giant dwarf (Peter Dinklage) forging the Infinity Gauntlet.
As one of the most narratively important objects in the Marvel Cinematic Universe so far, this is certainly still something to consider.
If you haven’t already, you can catch Avengers: Endgame in cinemas now.
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Jules studied English Literature with Creative Writing at Lancaster University before earning her masters in International Relations at Leiden University in The Netherlands (Hoi!). She then trained as a journalist through News Associates in Manchester. Jules has previously worked as a mental health blogger, copywriter and freelancer for various publications.