The tunnels are one of the contested point in this war.
Azief could see it even when he is walking leisurely above them
"It is amazing that the wall of those tunnel could absorb the power of these people fighting. Whether it be the elemental power or psionic power, or even those plasma and laser weapon, the shock absorbency of these walls is just one of a kind"
" In any other places the shockwaves of these people would bring down buildings. But the wall is still standing"
Azief could not help but think those craftsman really did not spare all the good materials when building these tunnels
He even had the inclination to reward them later. Maybe giving them, some raise or bestow them some title.
But it is not only fighting in the tunnels.
Some Disk Formation leveler pummel each other deep into the ground.
Some phases though the ground and fight each other deeper into the Earth
