Holly Keller has created vivacious new paintings for thisfavorite Reading Rainbow title about geology. Readers follow twoenthusiastic rock hounds around the globe as they add to theircollection. Along the way they will learn how sedimentary,metamorphic, and igneous rocks are formed. From the Egyptianpyramids to Roman roads, from the diamond ring on your finger tothe pebbles under your feet'rocks are everywhere!