Rumble!
The ends of the Holy Light Realm were once represented by an illusion barrier that made the realm seem ever-expansive when it, in reality, was anything but.
However, this illusion shattered as a true scenery appeared in its place. The plane expanded exponentially until it was almost ten times its original size!
New structures appeared with new treasures hidden within, and new dangers populated the lands.
Every genius outside the two tombs felt the change directly as the earth under their feet stretched and cracked.
Their interest was piqued.
The Holy Light Realm was already explored to its maximum potential. It wasn't that there weren't treasures or new environments to find, but rather the fact that a select few geniuses established such a dominance that the rest had no motivation to compete with them.