likely that hydrothermal effects are responsible for the Lazufre deformation. It is not clear whether this deformation is a signal of a future volcanic eruption, but monitoring has been recommended as it may be at risk of a major silicic eruption. Research published in 2016 indicated that the uplift has been ongoing since at least 400,000 years, based on the deformation of lava flows and volcanoes erupted within this time period. Depending on the highly uncertain estimates for the volume of the magma chamber, a modest overpressue may be sufficient to cause the roof of the chamber to fail and an eruption to start. See also List of volcanoes in Chile List of volcanoes in Argentina Los Colorados (caldera) References Complex volcanoes Volcanoes of Atacama Region Volcanoes of Catamarca Province Subduction volcanoes Mountains of Argentina Mountains of Chile Argentina–Chile border International mountains of South America Volcanoes of Antofagasta Region