Subsidence has been observed at Silali between 2007 – 2010. A radially symmetric signal centred on the calderas western edge (-1.6 +/- 0.4 cm/yr los displacement) was observed using ALOS data. This deformation is believed to have occurred at a linear rate of -1.5 +/- 0.8 cm/yr, and can  be modelled as a point geometry at a depth of 3.9 km (Robertson, 2015).
To the NW of Silali ~ 2 cm of subsidence associated with an active hydrothermal system (Kepedo Hot Springs) is observed.