The multiple fissure eruption of 1704-1705 formed the Siete Fuentes, Fasnia and Arafo volcanoes along a fracture more than ten kilometres long on Tenerife's ridge.
Sources
- Instituto Geológico y Minero de España, Erupción múltiple de 1704-05 de Fasnia, Siete Fuentes y Arafo[↗]