Even if she doesn't answer, the Dark Elf girl in front of her had almost guessed the truth.
As for why there suddenly appeared a ground entrance to the Salvador Forbidden Land deep within the Underground City, it's not something impossible.
The Underground City is quite a special area, although located beneath the continent's surface, its position and space are chaotic and disorderly.
Of course, this doesn't mean that the Underground City is akin to a spatial turbulence, but rather that the areas within the Underground City cannot correspond one-to-one with the surface.
For example, entering through one entrance of the Underground City, one might continue descending, but suddenly encounter another entrance leading back to the surface.
Logically speaking, this is absolutely impossible, but it occurs in the Underground City.
