I entered the maw in Sauromuge Champaign and began the quest Cavernous Maw, received the white feather, and am now on the quest Back to the beginning. When I was transported to the past, I aggroed a goblin and died without reactivating/touching another maw. I've been to the three main maws (Sauromunge, Rolanberry, and Batilla) but am not able to get back into any of them.
How do I get back to the past when no maws are active? I really want to unlock dnc.