Young collectors will be fascinated by all there is to know about rocks and about classifying - sorting and organizing objects by attributes like color, shape, or size. Grab your rock hammer and join the fun with this entertaining story by Stuart J. Murphy and lively art by Cat Bowman Smith.
Find a soft place. Take a shovel and start to dig a hole. So begins your trip through the center of the earth. You will have to dig about 8,000 miles to get to the other side of the world, and you'll need the latest equipment. As you dig, you may find fossils, or diamonds and emeralds, or even stroke oil. There will be problems, too - underground geysers and volcanoes and white-hot heat. But what a wild adventure!
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