Marble Volcano Simulation: 19652 Marbles Erupt!

This is a marble volcano! It uses the molecular addon in Blender, creating a stream of 19,652 marbles that erupt from a volcano. It seems like a pretty good simulation of a volcano, with an initial burst, then a slow eruption that picks up speed and finally winds down as the pressure in the magma chamber begins to drop. But what do I know about volcanos! It's fun to watch. :)