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Plaza Huincul

A small oil-producing city in Neuquén Province, Argentina, also known for important Late Cretaceous fossil discoveries.

Last updated August 26, 2026

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Overview

Plaza Huincul is a small city in southwestern Neuquén Province, Argentina. It lies in an arid Patagonian landscape and is closely associated with the development of the province’s oil and gas industry. The settlement expanded after the discovery of petroleum in the area in 1918, when the state oil company YPF brought workers to operate the first drilling installation there. This industrial origin continues to shape the local economy, which is centered mainly on oil and gas services and related activity. YPF also operates an oil and gas refinery in the city. Agriculture has a smaller but developing role, particularly sheep and goat raising. The city is linked administratively and economically with neighboring Cutral Có, and the two communities share interests in industrial activity and paleontological tourism. Plaza Huincul is served by National Route 22, one of Neuquén Province’s principal transport corridors, as well as Provincial Route 17. Its location is approximately 1,288 kilometers southwest of Buenos Aires and around 161 kilometers from the international border with Chile. The surrounding region is relatively flat, dry, and sparsely populated, with a desert climate characterized by low annual precipitation, hot summers, and cold winters. Human presence in the area predates the modern town. The locality was encountered during the late nineteenth-century Desert Campaign, and early settlement traditions associate the area with a Chilean man known by the surname Campos and his wife Carmen Funes, who was known as Pastoverde. They are described as offering rest and hospitality to travelers, including Pehuenche and Mapuche people. The name Plaza Huincul is generally understood as referring to a plaza or open area among hills. Modern municipal development followed the arrival of petroleum workers. YPF’s first drilling activity began on 13 September 1918, and a railway station was opened on 20 November 1921. Historical traces of the oil settlement remain, including an arch associated with the former YPF camp. Plaza Huincul became a municipality on 1 February 1967. The city has an importance beyond energy production because it gives its name to the Huincul Formation, a fossil-bearing geological unit from the Cenomanian stage of the Late Cretaceous. Nearby discoveries include Argentinosaurus huinculensis, one of the largest dinosaurs known from relatively substantial remains; Giganotosaurus carolinii, a giant predatory theropod; and Mapusaurus roseae, another large theropod described from material excavated between 1997 and 2001. These finds have made the area a significant destination for paleontological research and tourism. The municipality’s identity therefore combines petroleum history, transport infrastructure, desert settlement, agricultural activity, and dinosaur heritage. Plaza Huincul is a place rather than a commercial brand, so conventional brand attributes such as product lines, corporate ownership, executives, and financial market information do not apply.

History

The area now occupied by Plaza Huincul was incorporated into the expanding Argentine frontier during the nineteenth century. Reference accounts place an early encounter with the locality in 1876, during the Desert Campaign. Settlement traditions identify a Chilean man named Campos and his wife Carmen Funes, later known by the nickname Pastoverde, among the first permanent residents. They reportedly provided a stopping place for travelers and maintained connections with Indigenous communities, including Pehuenche and Mapuche groups. The locality’s name is commonly interpreted as meaning a plaza or open space associated with hills. The decisive transformation came from petroleum. Oil was discovered in the surrounding area in 1918, and on 13 September of that year YPF transported employees to Plaza Huincul to work on the company’s first drilling rig there. The resulting oil camp became the foundation of the modern settlement and established a relationship between the town and Argentina’s state petroleum enterprise that remains central to its identity. Industrial employment, services, and transport infrastructure expanded around the drilling operations. A railway station opened on 20 November 1921, improving the movement of workers, equipment, and petroleum products. The former YPF camp is commemorated by a large entrance arch, which remains a visible reminder of the town’s oil-industry origins. Over time, Plaza Huincul developed alongside neighboring Cutral Có, with the two communities sharing regional infrastructure, labor markets, and tourism interests. Petroleum and oilfield services continue to dominate the local economy, while sheep and goat raising provide a smaller agricultural activity. Plaza Huincul’s modern civic status was formalized when it became a municipality on 1 February 1967. Its strategic location along National Route 22 and Provincial Route 17 connects it with other parts of Neuquén, Patagonia, and routes toward Chile. The town occupies an arid, low-lying setting with limited rainfall, substantial seasonal temperature variation, and a landscape typical of the interior Patagonian desert. A second historical identity developed through paleontology. The city lends its name to the Huincul Formation, a Late Cretaceous fossil-bearing geological unit. In 1987, farmer Guillermo Heredia discovered remains later identified as belonging to Argentinosaurus huinculensis. He initially mistook an exposed fibula for a petrified tree trunk. The sauropod became one of the largest dinosaurs identified from relatively substantial fossil material, with published estimates placing its length at roughly 35 meters and its mass potentially in the range of 75 to 100 tonnes. In 1993, amateur fossil hunter Rubén Darío Carolini found a large theropod tibia while traveling by dune buggy. Excavation by a specialist team led by Rodolfo Coria produced an unusually complete skeleton, including part of the skull. The animal was named Giganotosaurus carolinii in 1994 and became recognized as one of the largest known carnivorous dinosaurs. Further excavations conducted from 1997 to 2001 by Coria and Canadian paleontologist Phil Currie initially appeared to concern another Giganotosaurus specimen. Differences in the bones, especially the skull, led researchers to identify a distinct close relative. That dinosaur was formally described and named Mapusaurus roseae in 2006. The paleontological record has strengthened Plaza Huincul’s tourism profile and created a complementary economic and cultural identity alongside petroleum. Today, the city remains an active municipality whose history is defined by oil production, regional transport, desert settlement, and the scientific and tourism value of its fossil heritage.

  • 2006

    Mapusaurus formally described

    [1]

    Fossils excavated from the Huincul Formation were formally described as Mapusaurus roseae, a close relative of Giganotosaurus.

  • 1993

    Giganotosaurus fossil discovered

    [1]

    Rubén Darío Carolini discovered a large theropod bone near the city, leading to the excavation and later naming of Giganotosaurus carolinii.

  • 1987

    Argentinosaurus remains discovered

    [1]

    Fossil remains found near Plaza Huincul were identified as belonging to Argentinosaurus huinculensis, one of the largest known dinosaurs.

  • 1967

    Municipal status established

    [1]

    Plaza Huincul became a municipality on 1 February.

  • 1921

    Railway station inaugurated

    [1]

    A railway station opened on 20 November, strengthening the connection between the oil camp and wider regional transport networks.

  • 1918

    Oil development begins

    [1]

    YPF brought employees to Plaza Huincul on 13 September to operate its first oil rig in the locality, setting the basis for the town’s industrial growth.

  • 1876

    Early settlement during the Desert Campaign

    [1]

    The area was recorded in connection with the Desert Campaign, and settlement traditions associate early permanent residence with Campos and Carmen Funes.

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