Quipus are books from the ancient Inca empire in Peru. But these books are so special, they are not made on paper, or leather, or parchment, they are not even carved on stone. These books are made of colorful yarn strings attached to a main cord, and instead of letters or numbers, they used knots! Lets learn how they were done.
The diagram (above) shows how the Inca calculated numbers on the quipu. [...] The color of the cords was also significant in that it represented the item which was being counted. The color depended upon the nature of the object; yellow for gold, red for the army, and white for peace. As the colors were limited, some colors had different meanings depending on the general purpose of the Quipu in question.
Valles Calchaquíes, Argentina . Son un sistema de valles y montañas del noroeste argentino , que se extiende de Norte a Sur por 520 km. abarcando el centro de Salta , Oeste de Tucuman y Noreste de Catamarca . Un viaje inolvidable . . .
Ancient aqueduct. It was built by the Nazca people hundreds of years ago to provide water from the local river to villages. The aqueduct is undeground. It has a few dozens of "windows", spiral wells which capture the wind and use its force to pump the water.
Inca fountains at Ollantaytambo, near Cusco, Pero. Repinned by Elizabeth VanBuskirk, author of "Beyond the Stones of Machu Picchu," short stories that reveal incidents of life, conflict, belief systems, respect for nature in Inca villages today.