The Evil Mountains.

Cain took a deep breath...

"So if I understand you clearly, then you are saying you can open the barrier around this forest, but you can only do it for a few seconds? And you can't leave because the gap will collapse due to your overwhelming power, is that it?"

Og-Solath nodded, "I think that encapsulates it pretty well."

"Wait, wait. I'm not done." Cain said, shaking his hands.

He continued, throwing a strange glance at his carbon copy. Having someone wearing your face and staring at you in such a way was a unique experience, to say the least.

"You also said that the Primordial Devil of Chaos, Bemethshal, was killed in the Evil Mountains, and while his corpse was proliferated, his heart was too much for them and they couldn't take it. Is that right?"