Averaged 2006-2009 ground velocity map of the west Sunda volcanic region, Indonesia, from ALOS InSAR. Positive velocity (red colors) represents movement towards the satellite (e.g. uplift) and negative velocity (blue colors) movement away from the satellite (e.g. subsidence). Locations of volcanoes are marked by black triangles, historically active volcanoes by red triangles. Insets: zoom into the six inflating volcanoes. Credit: Estelle Chaussard