Within the area of Hell's Gate, the laws of physics are void. A huge wall was built around the affected area. This wall keeps civilians and any other interested parties out of the Gate.
Several countries, including Japan, are cautiously conducting research on the Hell's Gate, exemplified by the top-secret PANDORA research facility built next to the Gate's perimeter wall. PANDORA works in and around Hell's Gate itself, sending both manned and robotic expeditions into the area.Darker than Black: The Black Contractor, as Hei, Yin and Mao enter it in order to face Amber. It is here that she sacrifices herself for Hei's sake, using her powers one more time to allow him to shut down the particle accelerator that would have destroyed the Gate, apparently erasing herself from existence in the process.
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- ↑ Darker than Black: Shikkoku No Hana; Chapter 1, page 9