Erupting volcano - Most of the geodes that we find today were actually created when ancient Volcanoes erupted! As the lava cooled, air bubbles became trapped inside creating empty pockets. Over millions of years these pockets filled with the minerals
During the Hadean Eon volcanoes played an integral part in the formation of the Earth. Even today volcanoes play a key role in the Earth's continued renewal of itself. Children and adults alike, it seems, are fascinated by these fountains of living.