C1934 Prairie Fire(5)

This was a huge space, and judging from the surrounding walls, this must be a cave or an underground cave. One of the main reasons that caused Cheng's expression of surprise was the area of this hole, which was tens of thousands of square meters. Cheng could not even see the end of the hole.

Of course, the biggest reason it wasn't possible to see the end wasn't just because the area was huge