Name of a rare type of hornpipe, used among the Kalapalo tribe (➺ NB), who live in Xingu Indigenous Park (Mato Grosso State); NB: The only 2 photos (© Kieron Nelson) I've ever seen of this instrument, show two men playing their instruments, apparently while dancing; NB: Oddly, Bakx, who fails to reveal his source, claims that "the urua is found exclusively among the Camayura [i.e. Kamaiurá (!)] people [sic] in the Xingu reserve of Mato Grosso, adding that "the largest [i.e. longest] pipe is identified with masculinity, the smallest [i.e. shortest] with femininity, and that "no woman is allowed to see the sacred reed flutes [sic]".

According to the caption to the photo mentioned above, the left-hand one of the tubes is more than 2, the other 1,5 meters long.