Quarantine Zone vacation

Requirements
Sputnik skull

What to Do
When you get into the "elevator" part of Quarantine Zone, get to that area thats in the middle of the elevator (if you know what place I'm talking about, keep reading, if not, press back now), then wait until you get into that BIG dark room, and when you see the first platform place, jump onto it at just the right time, then go to the back of it and jump carefully onto the bar thing holding the platform up, and walk down onto the strip that the elevator was hovering above, then if you jump down carefully you can reach that really dark place at the very bottom of the room.

Alternate Method
Do the same as the above except don't jump off the elevator until you go past that big room, then jump onto the platform when you enter that tunnel right after the dark room, then jump onto this bar thing to the right of it, then you should be right in front of that big circular door thing (but the doors missing), jump onto it while going left slightly, you should slide onto the bottom of the door, then fall off of it and you should be in this large corridor. Now see if you can find the secret room in this corridor.