We need to pay attention to the day when the tent was found.
1.If according to the first visitors it all looked like they abandoned the tent in a hurry escaping something, than it was exactly that.
2. If the large professional dogs were terrified of something and refusing to get out of the helicopter then there was something that humans can't sense.
And finally, the place has a creepy reputation, will anyone contest that?
So can we agree on those three points for a start?