Time Sewers
From Jenny Everywhere Wiki
The Time Sewers were a pocket dimension, resembling a network of decaying sewers and pipings. It served as the bespoke headquarters of the Collective of the Retconning Crocodiles, as well as their method of interdimensional travel, with the Crocodiles being able to open manholes out of the Sewers into whatever time and place in the Multiverse they wished. Doctor Sigma compared the Sewers to Jenny Everywhere's Infinite. He noted that it was unknown whether non-Crocodiles could access the Sewers, but that he would not recommend it even if it should turn out to be physically possible. (COMIC: The Beginner's Guide to Multiversal Theory)