Compared to four days ago, when he had fled for his life in this passage within the Secret Realm of another dimension and had had no time whatsoever to notice any of its features, Ye Zhen's exploration today was far more leisurely.
The passage was extremely spacious, about a hundred meters high and a hundred zhang wide. Its walls were incomparably hard; even with Ye Zhen's strength, he could not leave behind the slightest mark. There was no telling how it had been constructed.
The ground, however, was made of ordinary earth. Otherwise, Ye Zhen would not have been able to burrow down through it earlier.
Only now did Ye Zhen discover in astonishment that the floor of this passage was covered in an utter jumble of claw marks and footprints. The countless prints formed a strange pattern across the ground.
These claw marks were enormous. The smallest covered an area of at least one meter square, while the largest footprint stretched more than ten meters from front to back.
Clearly, these claw marks had been left by massive Monster Beasts, and there had been quite a few of them.
After carefully distinguishing them, Ye Zhen identified more than fifteen completely different kinds of footprints beneath his feet.
This meant that a large number of highly cultivated Monster Beasts had once passed through here.
Ye Zhen's expression turned cautious. With a whoosh, Profound Fire Spirit Armor covered the surface of his body.
As he ventured deeper, Ye Zhen carefully examined the thick, hard walls on either side of the passage and discovered traces of battle. There were even bloodstains that had seeped into the walls and turned dark brown.
Upon reaching the end of the passage—the place where Ye Zhen had previously seen a flickering Spiritual Light barrier from afar—he