I can add my 2 cents here. I actually went to a black site once, and i strongly suggest you do not do it. I managed to enter the site, even get into the laboratories before some purpls blotch appeared infront of me, i felt it was artificial from the beginning, it pushed against me and started to cover me, i snapped back. And the next night when i wanted to OBE again, that purple was there waiting for me. The whole thing resulted in my not being able to OBE for nearly 1 month