[Warning: The following contains a potentially major spoiler for the final season of Game of Thrones.]

Game of Thrones' final seasonis still well over a year away, but we now seemingly know one major event that will be happening when it returns: Winterfell will fall.

Watchers on the Wall reports that the Winterfell set in Northern Island was burned in an enormous blaze on Wednesday. Belfast Live reports that a concerned witness called the fire department, but firefighters found that the fire was part of a battle scene being filmed that featured between 400 and 500 extras. Watchers on the Wall, an extremely reliable Thrones fansite, points out that that number of extras means the battle is on the scale of the "Battle of the Bastards" from Season 6 or the "Loot Train" from Season 7. But you could probably infer that from the very fact that Winterfell, the home of the Starks and one of the most constant locations throughout the show, is an inferno.

This is obviously a huge Season 8 spoiler, and probably indicates that the Night King will keep riding his newly resurrected dragon Viserion south after destroying the Wall and lay waste to Winterfell when they reach it. This will be a massive blow to the Starks, who just got their home back after it was taken over by the Boltons. But beyond the more tangible loss of losing their home base, the destruction of Winterfell will also do serious damage to the morale of the North. Since the death of Ned Stark, the North has struggled with in-fighting, a trend which continued even after the Starks reclaimed their kingdom. The destruction of Winterfell may be a tragic enough event to unite all the factions over revenge, or it will only worsen the rifts and make it even harder to raise a unified army against the Night King.

Check out some footage of the blaze: