The ground came up slowly, revealing a large metal door buried beneath the wilderness. Isaac stood a few steps away from it, studying the structure while Selene continued checking the area around them. The entrance alone was large enough for several people to pass through at once.
Isaac wanted to send a few of his clones inside first and scout the area, but Selene confirmed that the ruins were safe. With her assurance, Isaac entered first alongside Catherine's clone, and the others followed carefully behind them. They did not know what they would find inside, so everyone remained alert even though nothing had attacked them so far.
The moment Isaac stepped through the entrance, he stopped for a moment and looked around. The space inside was enormous as expected, far larger than the Sky City.
He had seen spatial expansion technology before, so he could tell how baffling this place was.
