Unmute !

For those who can’t see/hear:

The video opens a door to an outside industrial plant-like area. Snow is on the ground and there is otherwise some miscellaneous noise of factory work going on.

Then the person behind the camera lets off an “OooOOO AH AH” ie the typical monkey sound.

Suddenly the air is filled with the cries of the humans imitating this monkey sound. No one is seen this entire time. You just hear the cries of people imitating monkeys.