Jatun Mayu (Tomás Frías)
# Jatun Mayu (Tomás Frías)

Jatun Mayu (Quechua hatun, jatun big, great, mayu river, "great river") which upstream is called Tinkipaya is a Bolivian river in the Potosí Department, Tomás Frías Province, Tinkipaya Municipality, Tinkipaya Canton, north of Potosí. It is a left tributary of the upper Pillku Mayu. The confluence is about 10 km south east of Tinkipaya.

