Bring the wonderful world of geology to your home this mind-blowing, educational and fun geology lab includes everything you will need to have fun. Geology is the science that deals with the earth's physical structure and substance, it's history and the processes that act on it. The three ideas of geology include geological time, uniformitarianism and plate tectonics. What a great birthday or holiday gift item for your budding geologist, 8 years and older. Limited manufacturer warranty, contact - warranty rmsint.com.