Once Upon A Rock (italicize)has three major sections. The first section sketches the origins of our planet, Earth. The second section introduces the Marsupian storyteller, Grandpa Wally and his Tale of Origin. (italicize) His tale includes a short description of each of the Marsupians. The third section illustrates how human beings used rocks from the earth's crust down through the ages. The intention of the book is to inspire the reader to want to kw more about the earth and it's inhabitants.