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Photo Friday: The sounding stone on the Parana River

The views expressed are those of the author and are not necessarily those of Scientific American.


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The Itaipú Dam is a hydroelectric power generation facility on the border between Brazil and Paraguay, on the Parana River. The name means “the sounding stone” in Guarani, an indigenous language in South America and one of the official languages in Paraguay.

Photo Credit: Photo of Itaipú Hydroelectric dam (April 25, 2008) by kevin.j. Found via Creative Commons.

 

Melissa C. Lott About the Author: An engineer and researcher who works at the intersection of energy, environment, technology, and policy. Follow on Twitter @mclott.

The views expressed are those of the author and are not necessarily those of Scientific American.





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  1. 1. Percival 4:55 am 11/12/2013

    Okay, that’s kinda cool, but *why* is it called the “sounding stone”? Does it hum or something?

    Link to this

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