Curu Leufvu

Curu Leufvu, the Río Negro, flows east across northern Patagonia to the Atlantic. Its lower valley was home to Indigenous communities when Francisco de Viedma established the fort of Nuestra Señora del Carmen on the south bank in April 1779. A flood destroyed that first site in June, and the settlement moved to the higher northern bank. The river continued to connect the interior with the coast around the new outpost.

The later city of Viedma lies here.