We made a composite volcano. We made it out of cheap play doe around a diet coke. We are going to put Mentos in it and it will explode. We have been working on this for about 2 weeks. We painted the volcano and labeled 10 things on the volcano. We have a hot spring, side vent, parasitic cone, dike, pyroclastic flow, magma chamber, pipe, vent, crater, and a lava flow.