Come take a trip like no other! Just open this book and you'll be launched on an incredible 4,000-mile journey through the layers of the earth -- from the surface to the crust, upper mantle, lower mantle, and all the way to its fiery core. A three-dimensional journey is conveyed by the use of a window on the cover and cut-outs on each spread to show the Earth's layers. A double gatefold provides the starting point for this fascinating scientific adventure that explores territory never seen by humankind. Dimensions (inches): 10 x 12