Ever wonder what happens to a volcano when the magma chamber beneath it fills up or empties out? Here’s an animation of the surface deformation on Mt. Etna, Italy, based on InSAR data collected between 1992 and 2001. “The deformation results from changes in the volume of a shallow chamber centered approximately 5 km (3 miles) below sea level. The accumulation of magma in this chamber results in the inflation, or expansion, of the volcano, while the release of magma from the chamber results in de

Mountain Formation Animation