The Roraima mountain is the triple border point of...
Brazil, Argentina and Paraguay
Colombia, Ecuador and Peru
Venezuela, Brazil and Guyana
Namibia, Zambia, South Africa
Mount Roraima is the highest of the Pakaraima chain of tepui plateaus in South America. It serves as the triple border point of Venezuela, Guyana and Brazil. It's one of the oldest geological formations on Earth, dating back around 2 billion years.  The flat summit of Mt Roraima is home to many species found nowhere else on Earth. 
reach: rather globalbordersgeographymountainsSouth America
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Brazil, Argentina and Paraguay
Colombia, Ecuador and Peru
Venezuela, Brazil and Guyana
Namibia, Zambia, South Africa
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