Kirsten is on the hunt for treasures created by volcanoes. First, she travels to the big island of Hawaii where Mt. Kilauea has been erupting for over 20 years. She dives for rare Hawaiian shells that live in lava tubes and tries her hand at the ancient art of spear fishing. Next stop is Modoc State Park in California to find the beautiful Rainbow Obsidian - a volcanic glass - that has been used by the Native American tribes here for centuries.