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Bottomless Pits: The Deepest Holes on Earth

Published by JK Kristie
October 23, 2009, Category: Physical Geography
11

The deepest sinkhole, bluehole and man-made hole on earth.


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The World’s Most Captivating Lagoons and Blue Holes

Published by nobert soloria bermosa
August 7, 2008, Category: Physical Geography
16

Explore the water world and discover these fascinating gifts of nature.


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