Okay, so the footage above isn't quite the spoiler-fest that the video's slightly dramatic title suggests, but it is still pretty cool.
Irish YouTube user Eye In The Sky has uploaded aerial drone footage which clearly shows the filming set for the next series of Game of Thrones – it's too far away to make out individual faces, but we can see a scene being shot in the shallows of a rocky beach that brings to mind the Iron Islands (and quite possibly, as one YouTube commenter suggests, a certain moment involving Euron "Crow's Eye" Greyjoy).