Best way I could think of explaining the place is a national park. There are a lot of animals and bugs there and its a vast area, the way there felt like I was going into a glitch since the way up is a real b**** and then I could see under the rock walls while walking past some of them but now I see its some sort of easter egg. If you go to the Great Khans hideou in the Red Canyon place and go right to the back there should be a very steep hill, it is posible to get up there, then the next steep bit, after that, follow the path but along the way there are a lot of those Casadors I believe they're called. You will need quite a few stimpacks and maybe a couple of companions to help aid you. Its quite a spectacular place when you get to it most of the animals are hostile but Im guessing there will be an easter egg inside this easter egg, I will hopefully upload a video of the place tommorrow but for now, heres a simple pic.