This tour will take you to the highest of the Andes by the international road to Argentina. The route gives a postcard view of the most imposing and beautiful mountains, including one of the most beautiful lagoons in the Andes mountains. The lagoon has an intense emerald green colour and transparency that reflects the vastness of the surrounding mountains. It tells the sad storey of a beautiful Inca princess who, when she died, her husband deposited the body of his beloved in the bed of the lagoon, turning the colour of the waters to emerald green, like the eyes of the princess.