Jurupari - Royal Botanic Gardens, Kew, Europe - CC BY-NC-SA.
https://www.europeana.eu/de/item/09102/_MINIM_UK_21189
Origin: Vaupés River, Colombia
Materials: bark, tube/stemm
Family: Large bark trumpet consisting of an hollowed-out tube/stem of paxiuba palm (Iriartea exorrhiza), wrapped with a long, coiled strip of the tough bark of the jebaru tree (Eperua grandiflora). Three wooden pole sticks and vine binding (not original) are used along the structure (two exterior, one interior) to strengthen its construction.
Use: The player blows in the proximal and exposed end of the tube.
Social context: Played during "Dabocuris" or "Festas.
He had the mysterious Juruparis of the Rio Negro Indians, that women are not allowed to look at and that even youths may not see till they have been subjected to fasting and scourging”
Link: http://www.traditionalmusic.co.uk/musical-instruments/musical-instruments%20-%200168.htm