Titi Pinkillu (Quechua titi lead, lead-colored, pinkillu a flute of the Andean region, "lead-colored pinkillu", Hispanicized spelling Titi Pinquillo) is a mountain in the Bolivian Andes. It is situated in the PotosàDepartment, Cornelio Saavedra Province, Tacobamba Municipality, near the border with the Tomás FrÃÂas Province, PotosàMunicipality. Titi Pinkillu lies north-east of the lake Urqu Qucha. This is also where the Challwiri River, an affluent of the Pillku Mayu, originates.