It is approximately 1,224 km (761 mi) long.
It was defined by the Treaty of 1898 (which is based on an Arbitration Award 1895), referred by President of the United States Grover Cleveland, and is perfectly demarcated.
The characterization work is in charge of the so-called "Joint Commission for Inspecting the Mark of the Brazil-Argentina" (created in 1970), which has deployed 310 boundary markers.
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