Talk:Easter Egg

I think I may have found a new Easter egg, or maybe just some audio errors idk but in the new location of the cassette player up on that little ridge above a small pool of water, I was going around hitting suitcases when I heard big sounds of movement coming from below me under the rock or something, I was pretty confused because there is no entrance to a space under the big boulder I was standing all around the cave system. i was sitting there for a while listening to the noise, it sounded very big, no ordinary mutant at all, maybe a new monster? or even deeper what if its one of the foretold aliens from the massive EMP machine in the mountain? they've got to add some sort of major extraterrestrial ending or Easter egg, give me some ideas, or am I just hearing things lmaoo..