Thank you for the video. Now I know how to get here for my next run-through. I found a way in by using my Tech 2 Jets - by going over the rocks and coming down the 'chimney' that opens into this area...but can't get out now. So, don't do that. The keycard door can't be opened from the inside...so, I am going to slowly die as it keeps respawning me inside this locked base area.