This is an Aztec Death Whistle. It creates a profound sound that frighteningly resembles a human scream. The Aztecs used these whistles in battle to strike fear into their enemies by having

Aztec Death Whistle the Human Skull You Won't Believe the Horrific

Strange Haunting Sounds of the Aztec Death Whistle - Archaic Roots

Strange Haunting Sounds of the Aztec Death Whistle - Archaic Roots

Aztec Death Whistle That Produced Horrifying Shriek Possibly

The Aztec Death Whistle Makes One of the Scariest Sounds You'll

Aztec Death Whistle!!!

Real Screaming Aztec Death Whistle by ITZCOEHUA

Aztec Death Whistle: A whistle that sounds like a human scream!

This is an Aztec Death Whistle. It creates a profound sound that