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Heavy Sculpture

  • May 21, 2015
  • By KIDS DISCOVER

The Great Sphinx of Giza was made from a single block of sandstone. It’s almost as long as a football field and weighs about 20 million pounds. Even so, scientists say the soft rock might have eroded away completely if it hadn’t been buried in sand so much over the centuries. (Merydolla / Shutterstock)

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