Zach's loud voice startled the others. They first realized what had happened to Julius. He was dragged down to the Underworld. Right now, he was plummeting to what could only be certain death.
Even if the underworld energy blocked their view and prevented them from seeing more than a leg when they tried to look down, it didn't take a genius to guess that the hole was deep. It reached all the way to the Underworld, and it was deep enough in the Underworld that it could spew out endless underworld energy.
The fall itself aside, the only thing that waited for Julius down there was the source of the underworld energy and more underworlders, most of whom didn't have friendly inclinations toward the surface.
In a way, it would be lucky if the fall killed Julius. Otherwise, he might be subjected to unfathomable experiments, not to mention the most likely fate of his familiar, who had perfectly adapted to underworld energy and evolved.