Caves are some of the most mysterious places on Earth. This fascinating series looks at six of the most intriguing of these underground treasure-houses, from the spectacular artwork found in Lascaux and in China's Caves of the Thousand Buddhas to the natural wonders of Mammoth and Kazumura caves. Kids will learn how caves are formed and what types of animals live in their darkened environments. Students will also learn how features on and below Earth's surface are constantly changed by a combination of slow and rapid processes and that rock is composed of different kinds of minerals.