Obelisk of Rangora
From Jenny Everywhere Wiki
In Reality Z-25 31-H, the Obelisk of Rangora was a monument in the Naked Jungle, sometimes guarded by a giant badger. It had the power to teleport visitors where they wished, even across universes.
On both occasions when she found herself in the Jungle, Wonderella used the Obelisk to return to her home universe. (COMIC: Wonderella Drops by the Jungle)