What is this place?

Discovering the hidden dimension inside the black miasma clearly surprised Aldrin. However, he had no time to mull over that detail. When prompted to spend IDLE Points to force an entry, he quickly accepted. As for its price, Aldrin felt a little sting in his chest upon thinking about it.

It's a staggering 100,000 IDLE Points. To rescue Irina, if she's still alive, Aldrin spent more than what the girl paid him more than a week ago. But there's no crying over spilled milk anymore. He got taken in by the sudden rush of emotion he felt upon discovering that, like Janet predicted, he was the only one among them who could do something about the situation. There's also no indication of how much he needed to pay to break it open or he missed that system message. Either way, even if he saw how much he needed to pay, he knew that he'd still go for it.