Fantasia of the Sky

Chapter 525 Investigation Beyond War 1
When the surface people began to evacuate from the ground is completely unknown.They may have begun to evacuate when the driver was caught-no, it may be earlier.When Huanmeng entered the mine to investigate, they might have already started preparations.

The underground base has been almost destroyed by Skell.Since returning to Sunset City, Skell has been sending magic balls to the underground of the Sunset Grassland. Anyway, it is a long-distance manipulation, which is the same in the wild and in the city.Under the attack of the magic ball, the people on the surface had completely abandoned their underground base, and they were no longer seen underground.

In the process of destruction, nothing was gained.Their mechanical beast production line has been completely destroyed, beyond repair - and impossible to repair.The underground has been turned into ruins, and part of the ground on the Sunset Grassland has become uneven—I really don’t know how the people on the surface dug up so many clods of soil.If you want to build such a huge underground building, you must dig out a lot of soil, but no one has ever discovered this. The surface people's secrecy work is really in place.

What Skell is most worried about is that these surface people must have a passage to leave the Sunset Grassland. The mechanical giant whale found in Dakonghai was created through this passage.Regardless of where their production base is, letting these dangerous elements escape is the most worrying thing.There are many monsters on the Sunset Grassland and few people. They can't do any large-scale damage—they can't attack Sunset City either—but if it's in the middle of the Floating Continent, it's different.Never let them go.

However, how did they leave?Although they had airships, Skell didn't feel like they could use them to fly over the "Wall"—it was just too improbable for such a large anomalous object to fly in the sky without being seen.

Judging from the establishment of such a huge underground base by the surface people, it is possible that the surface people passed underground.It is absolutely impossible for them to move such a huge steel giant whale there. Even if the parts are made, they should find a way to bring them near Dakonghai before assembling them.

So, where is this underground passage?

It is not that simple to build a passage through the "wall".Using an airship to transport supplies to Sunset City is not a small project. It consumes a lot of mana and is not efficient.If it can be transported by underground passages, the efficiency can be improved a lot-if underground passages can be opened, it will save a lot of trouble.However, there is a reason why the floating continent is not opened up.

The reason is precisely because of the existence of the "wall". The aboveground part of the "wall" is quite intricate, and its underground part is not simple.The peculiar geological structure there determines that it is not suitable for building underground passages there.If it is said to be built forcibly, it may lead to the collapse of the tunnel.After a detailed investigation, the magicians determined one thing: Even if an underground passage can be built, its diameter is quite limited, and it needs to be built extremely tortuous; question.Moreover, security issues are also difficult to guarantee-what if there are monsters who like to drill holes in the ground.

So... can surface people build it?
(End of this chapter)