He had dug away the mountain only to prevent the Lazarus Pit water, mutated by contamination from his own blood, from seeping underground through cracks in the rock.
Shane had no intention of carrying such a huge chunk of rock around the world.
Not only would it cause too much commotion, it would also be especially conspicuous. So halfway there, Shane found an open stretch of ocean and dumped the giant mountain into it.
As for the dark red pool water inside, Rachel had already packed it away using the Shadow Dimension.
Once they were far from the League of Assassins' headquarters, the chaotic magical fields vanished. Rachel successfully locked onto the Lazarus Pit water's energy signature and excavated it along with every piece of mountain rock that had been contaminated.
As for the remaining massive chunk of mountain, only the tip closest to where the earth veins converged had any value. Shane dug a vivid emerald crystal-like stone out of it; everything else was worthless.
Afterward, Jason entered the Shadow Dimension with Shane and returned to Gotham.
"So, what do we do next?"
Standing at the edge of the exit opened by the Shadow Dimension, Jason looked back and asked.
"What I do next."
Shane's face twisted into a savage expression.
"I already know who the real culprit is. Those lackeys in Gotham don't matter to me. Maybe you can wait for me to return. By then, the truth will naturally come to light."
Jason frowned. Clearly, he was not the kind of person who could sit still.
Seeing that, Shane stopped playing the Riddler and directly told Jason his suspicions.
"Those people who released the virus in Gotham are most likely connected to Apokolips. They aren't ordinary people, which is why you were never able to find any