Tralcán

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Tralcán
Tralcan1.jpg
View of Tralcán from the south side of Riñihue
Elevation around 1,024 meters
Location
Location West of Riñihue Lake, Valdivia Province, Chile
Range Andes
Coordinates 39°47′33″S 72°28′42″W / 39.79250°S 72.47833°W / -39.79250; -72.47833
Geology
Age of rock Triassic
Climbing
First ascent Probably prehispanic.

Tralcán (mapudungun for thunder) is a triangular shaped mount, which is located near Riñihue Lake, Chile. It is located south of the outflow dividing western Riñihue in two arms. Despite having been sacred to the huilliches for centuries, the mount became famous when several landslides near Tralcan dammed the Riñihue Lake after the 1960 Valdivia earthquake. The water levels in the lake rose more than 20 metres and became a threat to the existence of Valdivia 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 mountain is made of volcanic sediments from the Triassic making it one of the few fossiliferous secuences from the Mesozoic in Zona Sur.

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