To make it easier to see where the volcano has changed, the surface can be coloured to show where the biggest changes have been. Here you can see how there are three main 'lobes' of lava (coloured red) being forced up by the magma underneath. Monitoring the volcano like this would allow scientists to tell exactly where the dome is under the most pressure and help them decide in which direction new eruption mike occur. This is really important to people living near the volcano.

Having shown that mm-waves can be used to measure the changing volcano, the group in St Andrews is now planning to make AVTIS remote controlled so that it can stay on the crater rim and send back images of what the volcano is doing day and night.