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the Qanat system
Around 3,000 years ago, in what is now Iran, the Qanat system was developed as a sophisticated method of transporting water over long distances. These underground aqueducts were crucial for sustaining agriculture and settlements in hot, arid climates. The Qanat system involved digging tunnels by hand, often extending for many miles, with vertical shafts or wells dug at intervals to provide ventilation and access for the workers. These shafts supplied oxygen and allowed workers to reach the underground tunnels, making the construction of these vital water channels possible. The Qanat system remains a remarkable example of ancient engineering and ingenuity in water management.
Cingino Dam
At Cingino Dam - located 7 kilometres (4 mi) southwest of Antrona Schieranco, Province of Verbano-Cusio-Ossola in Piedmont, Italy - you will find some Alpine ibex wild goats climbing its wall. The Cingino Dam is just about vertical. It is 160 feet high and these wild goats climb almost to the top of it. This species of goat lives in the European Alps, it has split hooves with rubber like soles. They are exceptional climbers...but to see them climb this vertical wall is absolutely stunning!
Why would they do it? Their diet, which consists mostly of grass, gives them a major salt craving.
Coincidentally, the wall of Italy's Cingino Dam is built with salt encrusted stones - with the really good, salty stone blocks near the top of the dam. So in order to get to these mineral rich salts, these goats do what looks to be impossible...they climb a vertical wall.
This Circular Island in Argentina
This Circular Island in Argentina Not Only Floats, But Also Rotates Constantly
South America’s second longest river, the Paraná, which has a length of 4,880 kilometers, flows through three countries: Brazil, Paraguay and Argentina. 4,880 kilometers is no short distance – it gives plenty of opportunities for discovering amazing things. In the case of the Paraná, one of the most exciting discoveries was made at its delta: an island 120 meters in diameter, almost completely circular in shape, and floating freely on its axis.
More detalis/photos: http://bit.ly/3Y7plKw (by David Attenborough Fans, FB page)
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