Puerto Blest is on the western end of Nahuel Huapi Lake. It is part of the Nahuel Huapi National Park in the Rio Negro province of Argentina. Nahuel Huapi Lake is divided into different sections, and the western arm of the lake is the Blest section. The Blest branch of the lake covers an area of about 14 square miles. At the entrance to the Blest section of the lake is Centinela Island, where explorer Francisco Moreno is buried. He came to this region of Argentina in the late 1800s and later founded Nahuel Huapi National Park.
From Puerto Blest, you can reach Los Cantaros Waterfall as well climb the steps near the waterfall to Los Cantaros Lake which feeds into the falls. While hiking in the area, you will find cypress and coihue trees that grow in this area's rainforest micro climate. This region receives more rainfall than any other part of Argentina, and plants and fungi grow here that you can't find in other parts of the country. From the lake, you can also see several peaks of the Andes Mountain range.
Due to its remote location, Puerto Blest is best reached by boat from either Puerto San Carlos or Puerto Pañuelo, both of which are west of Bariloche. There are also several boat tour options from Bariloche.