The Hito Esmeralda (English: Emerald Landmark) is a tripoint where Argentina, Bolivia and Paraguay meet. This geographical point is at the edge of Pilcomayo River, at an altitude of 200 m, with coordinates of 22°13′31″S 62°38′11″W / 22.22528°S 62.63639°W / -22.22528; -62.63639.
Located within the region called Gran Chaco, the boundary marker marks a triple border region in South America; It is located more precisely 8km northeast of the Argentine town of Santa Victoria Este and 8km north of La Merced Mission, both in the province of Salta.
The Chaco limit was established by Hayes Case in 1878, and by the treaty complementary to the limits of 1939 signed in Buenos Aires, and ratified in Asunción in 1945.
References
- "Diario Digital abc de Paraguay - A 130 años de la decisión, los entretelones del laudo Hayes.". Archived from the original on 2016-03-04. Retrieved 2020-02-07.
- Ministerio de Justicia y Derechos Humanos, Presidencia de la Nación Argentina. Aprobación complementario de límites con Paraguay. Tratado 12.600.
- Historia general de las relaciones exteriores de la República Argentina. Las relaciones de la Argentina con Bolivia y Paraguay.