Be a rock hound! Just like a real explorer, you'll be digging up real geodes. There are 2 geodes inside. Dig out the geodes hidden in the rock. Break it open and discover its inner wonders. Learn about geology through the included adventure guide. A geode is a round rock that contains a hollow cavity lined with crystals. Not all geodes are the same - open yours to discover the hidden treasure inside. Ages 6+