HBO's Game of Thrones is currently filming its eighth and final season, and while the season is only set to last just six episodes, they are all rumored to be feature-length, and the production on these episodes is expected to last even longer than a traditional season. Last season marked the return of several characters who had been long missing from the show, like Gendry (Joe Dempsie) and Benjen Stark (Joseph Mawle), and it seems that a character from the first season may return as well. Jason Momoa, who played Khal Drogo, the Dothraki leader and husband to Danenerys Targaryen (Emilia Clarke) in the first season, posted a photo on social media from Belfast, alongside current GoT star Kristofer Hivju, which has many wondering if Khal Drogo may in fact return in the final season. Here's what Jason Momoa had to say about his short trip to Belfast.

"Unite the clans. 24hrs in Belfast GOT Super honored to once apart of this show. I love seeing all my friends and new ones @khivju your a f---ing legend Mad crazy love to Dan and David and Every one i saw i know u just started good luck with filming the greatest show in history have fun Aloha Drogo."

The actor doesn't mention actually being in Belfast to film scenes for the Game of Thrones final season, and it seems likely that he's in Belfast as part of the Justice League promotional tour. Over the past few days, the actor has also shared a photo with the "Mother of Dragons," his former co-star Emilia Clarke, along with another where he's seen with both Emilia Clarke and his Justice League co-star Gal Gadot. Here's what Jason Momoa had to say in his caption of the photo with just him and Emilia Clarke.

"Crazy mad insane LOVE for this queen it's truly like bubbles of giggles are in our bellies when we are together. It's a shame we don't get to see each other as much as we would like but when we do i feel like a f---ing KHAL love u @emilia_clarke always forever Yer Jalan Atthirari Anni #getreadyhereicome #GOTohana #slaps mahalo @bullchinashope1_ for always taking care of me @cristian.bullinachinashop you make it a home away from home brother. Aloha Drogo."

As unlikely as Khal Drogo's return may be, there is a precedent that is laid forth in the show and the Game of Thrones books. Khal Drogo was killed by a vengeful witch named Mirri Maz Duur (Mia Soteriou), who poisoned the Khal as revenge for the Dothraki sacking her village. When Daenerys pleads for her to save him, she does so, but the ritual that technically "saved" his life also put him in a vegetative state, with the ritual also drawing its power from the death of Drogo's horse, and the death of Dany and Drogo's son Rhaego, who was still-born. Mirri Maz Duur states that Khal will only return as his true self, "When the sun rises in the West, sets in the East. When the seas go dry. When the mountains blow in the wind like leaves."

Although, in the book, there was another part of this prophecy, which claims that Khal will return, "When your womb quickens again, and you bear a living child. Then he will return, and not before." That piece of information, paired with Jon Snow telling Daenerys that the witch "may not have been a reliable source of information," regarding her supposed inability to bear a child, could lead to Khal Drogo's return, if in fact Jon and Daenerys' tryst in the finale leads to her having a child. Still, there is no official confirmation that Jason Momoa will be back as Khal Drogo, but until we find out more information, take a look these photos from Jason Momoa's Instagram.