Lake General Carrera/Buenos Aires, Binational glacial lake in Patagonia, Argentina and Chile.
Lake Carrera stretches across thousands of square kilometers between Argentina and Chile with dark blue waters framed by snow-capped mountain peaks. The basin features steep shores and several coves, with the landscape shaped by rocky cliffs and sparse vegetation.
The basin formed thousands of years ago when massive glaciers during the Ice Age shaped the land and carved deep valleys. As the ice retreated, water filled the depression and created the lake we see today.
Local communities have long named the lake for its stormy character and the way wind churns the surface throughout the day. Today visitors see small fishing and ranching settlements that reflect how people have adapted to life along these remote shores.
The lake is most easily reached from Puerto Río Tranquilo on the Chilean side or from Los Antiguos in Argentina. December through March offers the most stable weather and clearest roads for travel through the region.
Along the Chilean shore lie marble caves carved by water currents over many centuries into calcium carbonate cliffs. These natural formations are visible from boats and show the steady erosion the lake continuously exerts on the rock face.
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