User blog comment:Xilinoc/Ch. 585 - The Headless Star 4/@comment-5693502-20140618085602/@comment-24153155-20140618154043

Yeah, logically speaking, only the final stages of the Royal Guard tunnel/worm hole/... should be still intact, as it took Ichigo a week to travel, if I remember correctly. I suppose that Ichigo has to ensure Yhwach and Co. can't reach the passage, since he is wearing/having the Kings Key and technically shouldn't fight Yhwach as they travel up. Unless he gets rid of his clothes or so...