Crystal clear Brother. From what I've read, you were definitely in the presence of a shady cat. When the hair stands up on ur neck, plz listen to what it is telling you. Thousands of stories of wanted felons hanging out on public land where the camping is free and the people are few. One story that was fairly local for me:
A couple years back, a guy is bowhunting state game lands in the Poconos in Pa. Mountains but not Colorado mntns. He was parked on a open highway in the game lands parking lot. He comes out at dark and is met at his truck by two asswipes that robbed a couple banks in Ohio and were trying to get to NY I think. They beat him down, tied him up and stole the truck. They could have easily killed him. It rang a bell with me because I had hunted there many times and parked in that exact parking lot.
Now insert myself, or any gun toting US citizen, into that scenario and it goes in a very different direction. Fact is you may never need it, and I hope you don't, but when in wild places where law enforcement is a long way off, I ALWAYS wear a gun. Victim=Volunteer and I will not volunteer.