But one fan theory suggests this scene wouldn't have happened if it wasn’t for one particular person’s actions.
One Reddit user has put the blame on Hot Pie (played by Ben Hawkey) for causing the destruction and for putting everyone’s lives at risk due to one key decision.
Back at the beginning of the season, he bumped into Arya Stark (Maisie Williams) who revealed she was heading to King’s Landing to kill Cersei Lannister (Lena Headey).
However, Hot Pie changed the course of her travels as he told his old friend her brother Jon Snow (Kit Harington) is back in Winterfell.
This key meeting made Arya travel to her home where she was reunited with her siblings Bran (Isaac Hempstead Wright) and Sansa instead of her original point of call to kill the Queen of the Seven Kingdoms.
The fan wrote: “Hot pie is the reason behind all of this. It’s all because of him, if he didn't tell Arya that Winterfell is under Stark's control, Cersei could be dead now Jon and his company won't get a white walker.
“They won't go beyond the wall, Viserion would be alive, The Wall won't fall. And all Westeros would be united against the Night King. YES! It's Hotpie's fault.”
There is no telling whether Hot Pie’s interference would have stopped the White Walkers from crossing into Westeros but the fan certainly has a point.
