The hole connected to the tunnel that Snoc dug. Snoc possessed the power of the Earth, so he could build a wide and sturdy tunnel that stretched a long way underneath the lake. 

The Iron Tribe was only on their guard against elves coming from ships, and they basically had no defensive line in the rear where Zich and his companions appeared.

“E-Enemies!”

“Enemies have appeared in the…Kugh!”

Zich’s sword sliced the neck of the shouting elf. Then, he pierced the heart of another elf by his side. Following Zich, the allied forces began to pour out of the hole. Hans and Lyla were among them, while Snoc remained inside the hole to maintain and protect it. In case of an emergency, that hole could serve as the sole method of retreat, so his role was incredibly important.

“Are you going to the battlefield right away?” Lyla asked Zich.

Zich nodded. “Of course. I have to help the troops land first though.”

Numbers were a strength in a war.

“Furthermore, our opponents would be surprised and demoralized by the sudden force appearing behind them. Naturally, we’ll be able to attack them from both sides.” It would certainly be hellish for their opponents.

Lyla responded,...