The Brazil–Venezuela border is the limit that separates the territories of Brazil and Venezuela.It was delimited by the Treaty of Limits and River Navigation of May 5, 1859 and ratified by the Protocol of 1929. The geographical boundary begins at the triple point between Brazil-Colombia-Venezuela at Cucuy Rock and continues up the Maturacá channel to the Huá waterfall; it then follows a …
Link: https://en.wikipedia.org/wiki/Brazil%E2%80%93Venezuela_border