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The Vichada River ( es, Río Vichada, ) is a 
The eastward course of the Vichada is offset by an Planetary Society Researcher Max Rocca Discovers Largest Impact Crater in South America
A Target Earth update by Amir Alexander, February 13, 2010, retrieved 25 May 2017
blackwater river
A blackwater river is a type of river with a slow-moving channel flowing through forested swamps or wetlands. As vegetation decays, tannins leach into the water, making a transparent, acidic water that is darkly stained, resembling black te ...
in the country of Colombia
Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...
, South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...
. It flows into the Orinoco River
The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers , with 76.3 percent of it in Venezuela and the remainder in Colombia. It is the fourth largest river in the wor ...
.
The eastward course of the Vichada is offset by an impact structure
An impact structure is a generally circular or craterlike geologic structure of deformed bedrock or sediment produced by impact on a planetary surface, whatever the stage of erosion of the structure. In contrast, an impact crater is the surface ...
, called the Vichada Structure
The Vichada Structure is a probable impact structure along the Vichada River in Colombia (Vichada Department), South America. It is most likely the largest impact structure in South America.
The structure was discovered in 2004 by Max Rocca ...
. The structure is most likely the largest impact structure in South America.A Target Earth update by Amir Alexander, February 13, 2010, retrieved 25 May 2017
References
Rivers of Colombia Orinoco basin {{Colombia-river-stub