HBO has released a new trailer for Game of Thrones climactic Season 8. Among many other things, the trailer gives a first look at the show’s massive battle that lasts an entire episode and is expected to be the longest consecutive action sequence in cinema history.

Previous teasers have shown us Jon, Sansa, and Arya in the crypt of Winterfell, and a meeting between Sansa and Daenerys, but besides brief shots revealed in HBO’s programming previews, this is the first look at actual footage from the final season.

Actors from the show have been speaking in cryptic terms about the season: Kit Harington (Jon Snow) is satisfied with the ending, Lena Headey (Cersei Lannister) says the season will “surprise at every turn”, and Liam Cunnigham (Davos Seaworth) has called the climax “honorable”.

Although Game of Thrones is nearing the end, there is a prequel spin-off on the way. X-Men: First Class‘ Jane Goldman will serve as showrunner and has developed the story with creator George RR Martin. This week it was revealed that the show will start filming early this summer.

Game of Thrones Season 8 will premiere on April 14.