Dan Darci - Mega Rock, Fossil Mineral Activity Kit 250+ Specimens This Dan Darci Mega Rock, Fossil Mineral Activity Kit includes over 250 specimens of various rocks, fossils, and minerals. It's perfect for collectors and enthusiasts of all ages who want to explore the wonders of nature. The kit features a variety of unique items that will make a great addition to any collection. The kit is ideal for those interested in geology and natural history. It's a great way to get your hands on a wide range of fossils and minerals, and to learn about the fascinating world of nature. With the Dan Darci Mega Rock, Fossil Mineral Activity Kit, you'll be able to experience the thrill of discovery and learn about the wonders of the past.