Kachi Unu  Kachi Unu (Quechua "kachi" salt, "unu, yaku" water, "salt water", Hispanicized spelling "Cachi Unu") is a mountain in the Andes of Bolivia. It is situated in the Potosí Department, Nor Lípez Province, Colcha "K" Municipality, San Juan Canton, and in the Quemes Municipality, Chiguana Canton. Kachi Unu lies northwest of Chiwana and Chakra Urqu and northeast of Tomasamil and Millu Urqu.