Inside this book is a story that was hidden; a story of rocks that began miles below sea level. They traveled on the unstoppable, slowly moving crust of the ocean floor. The collisions between the ocean crust and continent eventually built places like California. The uplifted rocks can easily be found in the hills, creeks, rivers and beaches. Read the book. When you find a rock that you recognize, learn it's name and story. Then you will have a new friend for your pocket.