Just as the exhausted miner slaves lay sprawled against the tunnel walls, preparing to rest for a while, a rumbling suddenly rose from beneath the ground. Every demon immediately scrambled to its feet, looking around in terror.
Batman, lost in thought, was startled awake as well, but he immediately realized what was happening. He lowered his head, his gaze piercing through layers of rock toward the sea of lava at the very bottom of the mine.
"Someone is stirring the magma! Someone is stirring the magma!" the Serpent Demon Elder cried. "This is an ancient fire spell. It can make magma surge into huge waves, and it can also trigger a volcanic eruption! Hurry! Get out of here!"
At the words "magma eruption," a concept immediately flashed through Batman's mind: "mountain structure."
The mountain structure of a mine differed from that of ordinary peaks. There were far too many cavities within it, large and small cavities nested together into a complex web. Such terrain was naturally ideal for tunnel warfare.
But it also had one greatest weakness: once the main structure was damaged, total collapse was inevitable. As always, under gravity, all things were equal. If an actual mountain came crashing down, no one would survive.
Batman had expected that he would eventually have to confront the troublesome issue of magic, but he had not expected the day to come so quickly. He had not anticipated that General Corrupt Heart would react far faster than he had imagined. The underground magma truly was an excellent strategic target.
What astonished Batman was that General Corrupt Heart had actually been willing to sacrifice his own tail to save himself. Even under the immense production pressure imposed by Belial, he had still dared to make such a huge move, abandoning the entire Central