The Penetralium is the vaulted fortress that the Amazons have used to keep guard over their Mother Box for millennia.


Upon Steppenwolf's return to Earth, Hippolyta gathered dozens of Amazonian warriors in the Penetralium within the island of Themyscira. Tasked to look for the Mother Box that will help conquer Earth and form the Unity, Steppenwolf located the first Mother Box as its location had been hidden by the Amazons. Steppenwolf called in the Parademons with his axe and was about to take the Mother Box, but Hippolyta caught it first with her magic lasso and runs out of the chamber to let her Amazonian guards to seal the gates. Steppenwolf has made it out of the Penetralium to finally get his Mother Box and escape Themyscira.[1]


  1. Terrio, Chris, Whedon, Joss (writers) & Snyder, Zack (director) (November 17, 2017). Justice League.
Community content is available under CC-BY-SA unless otherwise noted.