What's Inside a Peruvian Whistling Vessel
A whistling vessel (huaco silbador) is an ancient type of ceramic art in which water moves between two chambers and produces a bird whistle. There are many that survive from pre-Columbian Central and South Ameri...
https://www.neatorama.com/2022/07/12/Whats-Inside-a-Peruvian-Whistling-Vessel/