steffen glacier in campo de hielo sur southern patagonian ice field, chilean patagonia

america andes antarctica argentina aysacopy border bruggen caleta campo change channels chile chilean climate field fields fjords glacial glaciares glaciation glacier grey hemisphere hielo higgins huemules ice issue laguna lake los mass moreno nacional national park parque patagonia patagonian period perito rafael range region retreating river san sheet south southern steffen sur tongue tortel uppsala viedma