The highest point of the Underground Space was probably where he had excavated the passage. It was nearly five hundred meters below ground and seemed to be shaped like a cone, growing wider the farther down it went, until it finally opened into a vast space spanning several kilometers.
This was the range Chen Mo had estimated after sweeping it with his Spiritual Sense, but in reality, it was probably much larger!
The Underground Dark River flowed through the center of the space. Though its current was slow, it was several hundred meters deep, and its width of over fifty meters showed just how abundant the water was.
What surprised Chen Mo most about the Underground Space was that after descending more than a hundred meters, he saw specks of light!
As Chen Mo guided the Green Jade Sword closer, he discovered that the specks of light all came from a type of moss growing on the stone walls, emitting soft, gentle glimmers.
The entire Underground Space was illuminated by this light, forming a living ecosystem.
With a whoosh, a tiny little bird flew past Chen Mo. Then came its chirping—chirp, chirp!—followed by the sound of countless wings beating as swarms of these little birds called out and flew past him!
The Underground Space was no longer uniformly silent. Before Chen Mo's eyes, it brimmed with vibrant life!
Just from what he could see, there were several species of birds flying through the space, not to mention the other kinds of animals.
The Underground Dark River also contained all kinds of fish, large and small, some familiar and some unfamiliar! Even those he recognized had changed somewhat in appearance, perhaps adapting to life in the Underground Dark River and altering themselves to better suit this environment.
There were even more