Location in Uruguay

Coordinates: 31°05′05″S 56°00′30″W / 31.08472°S 56.00833°W / -31.08472; -56.00833Coordinates: 31°05′05″S 56°00′30″W / 31.08472°S 56.00833°W / -31.08472; -56.00833
Country  Uruguay
Department Rivera Department
Population (2011)
  Total 240
Time zone UTC -3
Postal code 40001
Dial plan +598 4656 (+4 digits)

Masoller is a village or populated centre of the Rivera Department in northern Uruguay, next to the de facto border with Brazil, in an area where that border is disputed.


The village is located on Route 30, on the tripoint with Salto and Artigas departments, in the municipality of Tranqueras.


Main article: Battle of Masoller

In 1904 a notable battle was fought at Masoller between the opposing forces of the Colorados, led by José Batlle y Ordóñez, and the Blancos, led by Aparicio Saravia, resulting in a victory for the former. The Battle of Masoller is reckoned to mark the end of the intermittent civil war which occurred throughout much of 19th century Uruguay.

Uruguayan-Brazilian border dispute

A longstanding border dispute involving territory in the vicinity of Masoller exists between Uruguay and Brazil, although this has not harmed close diplomatic and economic relations between the two countries. The disputed area is called Rincón de Artigas (Portuguese: Rincão de Artigas), and the dispute arises from the fact that the treaty that delimited the Brazil-Uruguay border in 1851 determined that the border in that area would be a creek called Arroyo de la Invernada (Portuguese: Arroio da Invernada), but the two countries disagree on which actual stream is the so-named one.[1]

So far, Rincón de Artigas is effectively under Brazilian control. The village of Masoller itself is in undisputed Uruguayan territory, just a few hundred metres from the largely unmarked and unimpeded de facto international border.[2]


In 2011 Masoller had a population of 240.[3]

Year Population
1963 56
1975 115
1985 61
1996 201
2004 261
2011 240

Source: Instituto Nacional de Estadística de Uruguay[4]

See also


  1. Griswold, Clark (2013-03-10). "The current territorial disputes of Brazil". Férias do Clark (personal blog) (in Portuguese). Retrieved 2014-06-07.
  2. "Masoller on Google Maps". Retrieved 2014-01-09.
  3. "2004 Census of Rivera department" (XLS). INE. 2004. Retrieved 4 July 2011.
  4. "1963–1996 Statistics / M" (DOC). Instituto Nacional de Estadística de Uruguay. 2004. Retrieved 4 July 2011.
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