quipu · All Facts

quipu
The Inca used a system of knotted strings called quipu instead of written language to record information — some contained over 2,000 strings.
SrcSmithsonian

Next evidence →longest mountain range on EarthThe Andes are the longest mountain range on Earth — stretching over 4,300 miles along South America's western edge.

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More in South America

dilutes the ocean's saltinessThe Amazon River discharges so much water that it dilutes the ocean's saltiness for over 100 miles offshore.
massive geoglyphsThe Nazca Lines in Peru are massive geoglyphs — some over 1,200 feet long — that can only be fully seen from the air. Scientists still debate their purpose.
highest navigable lake in the worldLake Titicaca on the Peru-Bolivia border is the highest navigable lake in the world at 12,507 feet above sea level.
6% of the world's oxygenThe Amazon Rainforest produces about 6% of the world's oxygen and is home to 10% of all species on Earth.

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