The new combo set by 4M brings 2 bestselling science toys in one! KidzLabs Volcano & Crystal Mining Combo Science Kit features a volcano making kit and rock mining kit in one box. With the enclosed instructions and materials from this science kit kids will make and erupt a mini volcano and learn about this natural phenomenon. Baking soda and vinegar from your own kitchen are needed for exciting volcanic activity eruption. Excavate crystal treasures produced by the volcanic activity of the past thousands of years.This geology themed science kit brings fun hands-on exploration of building and mining. This science kit for kids is also a great idea for your next science presentation.