Aztec death whistle

The guy showed what the ancient Aztec death whistle sounded like. The sound is very similar to a human scream.

The whistle imitates a human scream, which can be heard for hundreds of meters.

There are several hypotheses about the use of the death whistle. The Aztecs could have used these whistles for ritual purposes during human sacrifices or as an instrument of intimidation during war. Copies of the whistles are sold on marketplaces, or can be printed on a 3D printer. Here's an idea for an evening walk in the forest