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What on Earth Made This?


Mystery of the Megaflood homepage

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The Devil's Postpile. The Old Man of the Mountain. These and other geological formations look so astounding that simple, more scientific names just won't do. Yet many of the world's most unique and awe-inspiring wonders were forged by common geological processes. In this quiz, test your hunches about the earthly forces that made eight supernatural-looking structures.—Susan K. Lewis

  

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NOVA Home Find out what's coming up on air Listing of previous NOVA Web sites NOVA's history Subscribe to the NOVA bulletin Lesson plans and more for teachers NOVA RSS feeds Tell us what you think Program transcripts Buy NOVA videos or DVDs Watch NOVA programs online Answers to frequently asked questions