Recipe for a volcano.

1 part salt

1 part hot water

3 parts flour

baking soda and vinegar

Make dough and build a volcano up around a glass jar or small plastic cup. Let dry 1-3 days. To "erupt" the volcano, put about 3/4 cup of baking soda inside the volcano and pour on the vinegar. Then do it again and again and again!

P.S. It really helps if you have some little hands to flatten the dough!