The hole rapidly expanded until the trio could see the other side, which was a white room with a platform. Around this time, the Holy Silver Divine Door began its counterattack to destroy the nanobots.
However, it was far too late, with an opening present, Darius teleported his group through the hole. Technically, he could have used Group Teleportation from the very beginning, even if the door had remained closed, but that would have been utterly foolish.
After all, how could it have been possible for him to be the first person to think of this after hundreds of thousands of years?
Teleportation was not exactly something new nor that rare and had naturally existed in the past.
How could the Politos who lived in a world of magic and Gods have built such a door with a mindset of 'oh, let's create this very important Vault without the ability to block unauthorized spatial crossing'?