Huaca (multiple chambered pan-cultural vessel flute)

Origin: The Huaca was originally developed by ceramist Sharon Rowell from the San Francisco Bay area in the 1980s.

Types: Native Huaca, Melodic Huaca

Family: Wind instrument

Relationships: Inspired by the sound of Foghorns and similar to the ocarina (MusicBrainz, https://musicbrainz.org/instrument/e93eda0f-9475-45c1-9194-29020d9b83e9)

Description: Made of clay, the Huaca has multiple large chambers (usually two or three) with a split mouthpiece allowing one, two or three notes to be played simultaneously. Chambers are tuned to a specific key and are round in shape.

What it sounds like:

https://www.youtube.com/watch?v=PcHG0Xmt800 (Alan Tower playing Renaissance Fog) 

Images:

http://www.oddmusic.com/gallery/huaca1.jpg (OddMusic, Huaca)

https://flic.kr/p/7gXFjh (Jafafa Hots, a 2-chambered Huaca made by Sharon Rowell)

Sources: 

https://www.stonewhistle.com/huacas/ (StoneWhistle, Huacas)

http://www.oddmusic.com/gallery/om19550.html (OddMusic, Huaca)