The
Teles Pires is a 1370 km long river in
Brasil. The river flows through the state of
Mato Grosso and its lower part marks the border between the states of Mato Grosso and
Pará. At its mouth it joins
Juruena River and together they form the
Tapajós, which is one of the biggest tributaries of the
Amazon River. The most important settlement along the river is
Alta Floresta.