A pongo is a word used in the Peruvian Spanish dialect for 'canyon'. It is derived from either Quechua puncu and the Aymara ponco, meaning 'door' or 'gate.'^[1]

See:

• The Pongo de Manseriche: a gorge in northwest Peru where the Marañón River runs. The Marañón River has 35 miles of pongo before it joins the Amazon River.^[2]
• The Pongo de Mainique: the most dangerous whitewater pass on the Urubamba River.
• The Huallaga River forms the Pongo de Aguirre when crossing a part of the Andes.^[3]