Kick excitement into high gear with this extreme title! Short, easy-to-read text pairs with full-color, action-packed photos to introduce young adventurers to the sport of caving. Readers will learn about the tools and equipment used in exploring caves, as well as dangers and safety tips. They are introduced to types of caves including limestone caves, sandstone caves, lava caves, sea caves, ice and glacier caves, sinkholes, and mud and boulder caves. Cave formations such as stalactites and stalagmites are also introduced. Extreme facts supplement the text, leaving future spelunkers excited for an extreme adventure! Aligned to Common Core Standards and correlated to state standards. A&D Xtreme is an imprint of ABDO Publishing Publishing Company.