Reverse Mountain is the entrance to the Grand Line in One Piece, and it's also the last thing you'd run into if you completed the world's circumnavigation.

A giant X, in a world of pirates? There must be treasure under there! Maybe it's Laugh Tail, maybe it's an Ancient Weapon, maybe it's a secret tunnel that leads to the center of the hollow earth. Anything like that would resolve this market YES. If One Piece ends with no reveal of something like that at Reverse Mountain, this market resolves NO.

Close date will be extended as necessary.