While exploring their grandfather's farm, Max and Hannah discover hundreds of round rocks piled up in the corner of a field. The children seek out Grandpa to learn how the rocks got there and why the rocks are round. The Mystery of the Round Rocks explores part of the geological history of South Dakota. The story begins with huge mountains and vast glaciers that form rivers and thousands of small round rocks. Along the way, watch out for saber-toothed tigers, woolly mammoths, and short-faced bears.

 

This book was recognised in the Mid West Fiction category by the Independent Publisher Book Award.

This book is part of a book series called Mystery Stories .

There are 44 pages in this book. This book was published 2007 by South Dakota State Historical Society .