Mountain of Judgment

"Man, you don't grab it! The mountain -- i-it's not like a place-- i-it's more like a thing! Like Moby Dick! You go out to meet it -- and die!"
 * -Yango; "Jimmy Olsen, Superman's Pal, Brings Back the Newsboy Legion!"

The Mountain of Judgment is a huge, moving mountain in The Wild Area. Even the locals are reluctant to speak of it.

When it moves, it makes the ground shake hard enough to knock people to their feet and overturn furniture even miles away and there are distant lights.

Pre-Saga
At some point, before Morgan Edge bought the Daily Planet, Yango of the Outsiders attempted to find the Mountain by driving down the Zoomway. He failed, and the experience left a negative impression on him.

Morgan Edge sends Jimmy Olsen and The Newsboy Legion to The Wild Area to learn the secrets of the Mountain.