Video: This Aztec Whistle Is One Of The Scariest Sounds You’ll Ever Hear.

1 648 ViewsUnexplained Mysteries This Aztec whistle is one of the scariest sounds you’ll ever hear. We take a look at the Aztec whistle and the chilling sound it makes. When odd, skull-shaped grave items were found by archaeologists decades ago at an Aztec temple in Mexico, they were assumed to be mere toys or ornaments, […]