Tralcán ( mapudungun for ''thunder'') is a triangular-shaped mountain, which is located near

Riñihue Lake The Riñihue Lake ( es, Lago Riñihue ) is a lake of glacial origin in eastern Valdivia Province, southern Chile. It is surrounded by several mountains. The eastern side receives the waters of the Panguipulli Lake by the Enco River, its main con ...

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

. It is located south of the outflow dividing western Riñihue in two arms. Despite having been sacred to the

huilliche The Huilliche , Huiliche or Huilliche-Mapuche are the southern partiality of the Mapuche macroethnic group of Chile. Located in the Zona Sur, they inhabit both Futahuillimapu ("great land of the south") and, as the Cunco subgroup, the north hal ...

s for centuries, the mount became famous when several landslides near Tralcan dammed the Riñihue Lake after the

1960 Valdivia earthquake The 1960 Valdivia earthquake and tsunami ( es, link=no, Terremoto de Valdivia) or the Great Chilean earthquake (''Gran terremoto de Chile'') on 22 May 1960 was the most powerful earthquake ever recorded. Various studies have placed it at 9.4– ...

. The water levels in the lake rose more than 20 m and became a threat to the existence of

Valdivia Valdivia (; Mapuche: Ainil) is a city and commune in southern Chile, administered by the Municipality of Valdivia. The city is named after its founder Pedro de Valdivia and is located at the confluence of the Calle-Calle, Valdivia, and Cau-Cau R ...

city. These events came to be known as The Riñihuazo ("El Riñihuazo" in Spanish). There is evidence that a similar landslide occurred after the

1575 Valdivia earthquake The 1575 Valdivia earthquake occurred at 14:30 local time on December 16. It had an estimated magnitude of 8.5 of on the surface wave magnitude scale and an estimated magnitude of 9.0+ on the Moment magnitude scale and led to the flood of Valdi ...

. The mountain is made of

volcanic A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates a ...

sediment Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sa ...

s from the

Triassic The Triassic ( ) is a geologic period and system (stratigraphy), system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Year#Abbreviations yr and ya, Mya), to the beginning of the Jurassic Period 201.36 ...

making it one of the few

fossiliferous A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

sequences from the

Mesozoic The Mesozoic Era ( ), also called the Age of Reptiles, the Age of Conifers, and colloquially as the Age of the Dinosaurs is the second-to-last era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretace ...

Zona Sur Zona Sur (''Southern Zone'') is one of the five natural regions on which CORFO divided continental Chile in 1950. Its northern border is formed by the Bío-Bío River, which separates it from the Central Chile Zone. The Southern Zone borders t ...

. These sediments are known as the Tralcán Formation. Northwest of Tralcán lies the hill Llecué.

External links

Map of Tralcan

References

Mountains of Chile Mountains of Los Ríos Region {{LosRíos-geo-stub