sentences:  The Altos de Toro Blanco mountains separate Lejía Lake's drainage basin from the Salar de Aguas Calientes catchment.A lineament known as the Tumisa line runs along the southern shore of the lake, and appears to have been the site of three earthquakes in post-glacial time.The lake is influenced by volcanic activity from the neighbouring Lascar; ash and pyroclastic material entered Lejía Lake in 1993, and the large Soncor eruption from this volcano 26,450 years before present filled the lake.