User blog comment:Godisme/The Tearing/@comment-823339-20120215172426

I'm not sure the dimensional hole is a garganta, it's possible that it's a sign that the barriers between the worlds are already starting to weaken because of the assault on Hollows mentioned in the last chapter. Plus Hiyori said she smelled Shinigami, not Hollows which would be the more likely case if the hole led to Hueco Mundo.