Perito Moreno – also known as Lake Buenos Aires – is a city in the northwest of the province of Santa Cruz, Argentina. It is the head of the department Lake Buenos Aires. The Fénix Grande River passes through this town, which flows into the Deseado River.
The Perito Moreno glacier is a thick mass of ice located in the Lago Argentino department of the province of Santa Cruz, in the southwest of Argentina, in the Patagonia region. It is integrated into the Los Glaciares National Park. This glacier originates in the Southern Patagonian ice field.