How did the Cave of the Glowing Skulls get its name? Why are diamonds so expensive? How do blind cave creatures find their way around? This title investigates the extraordinary world lying deep underground. It looks at the amazing cave networks that lie hidden within the Earth and explains how resources, such as oil and coal, are found and extracted.
This is Book 4 in the Earth's Final Frontiers Series. See all Earth's Final Frontiers books here.
See More Educational: Geography
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