Reminds me of an experience at DXB in February (well apart from the cold bit
).
Flight to SGN was called, and it was on a stand in the middle of nowhere, so everyone piled onto the escalator down to a small coach boarding area.
Of course the coaches weren't ready and the doors to the outside were still closed, but that didn't stop a full 777-300's worth of passengers all attempting to occupy the same small space at the same time.
For the last batch of passengers coming down the escalator with no space to get off it at the bottom, it had the potential to turn into a very nasty accident. Fortunately, it didn't.