Mysterious Cave Encounter Video Analysis

This might be the last video a man ever recorded.

It was found near Fairbanks, Alaska, and the guy filming is named

Jack. He's been trapped inside an unknown cave

in the mountains for days.

At first, people thought he was shaking because of the cold,

but when the camera gets closer, you realize something is wrong.

His face is completely destroyed by frostbite with ice frozen into his skin,

but

that's not why he's shaking. He's scared.

Jack keeps repeating that he

saw something, something flying, something that crashed into the mountains,

and he

says he shouldn't even be alive, but something has been helping him

survive, giving him food, guiding him, keeping him alive.

And the worst part is it's been watching him the entire time,

just

watching him. Then he suddenly goes quiet because from

deep inside

the cave, you hear this low, heavy sound, not quite

breathing, not quite anything human.

Jack whispers, "What is that?" And right after that,

the video cuts off with his scream.

So what do you think was down there watching him?