Tralcan (mapudungun for thunder) is a triangular shaped mount near Rinihue Lake, Chile. It is located south of the outflow dividing western Rinihue in two arms. Despite been sacred for the huilliches for centuries, the mount became famous when several landslides near Tralcan dammed the Rinihue Lake, after the Great Chilean Earthquake. The water levels in the lake rose more than 20 meters and became a threat to the existence of Valdivia city. These event come to be known as The Rinihuazo ("El Rinihuazo" in Spanish). There is evidence that a similar landslide occurred in 1575.
The mountain is made of volcanic sediments from the Triassic making it one of the few fossiliferous secuences from the Mesozoic in Zona Sur.
Map of Tralcan
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article Tralcan