NEW CAVE PHOTOS: Inside Gabon's Longest Mapped Cave

 NEW CAVE PHOTOS: Inside Gabon's Longest Mapped Cave
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A 150-foot-long (45-meter-long) light shaft illuminates Grottes de Lastourville in Gabon in a picture released in April 2009.

An expedition team that explored the cave system last summer never discovered the above-ground entrance in the rainforest. But the cavers did explore a total of 14 caves and were able to map 11 of them. The team charted a total of 3.4 miles (5.5 kilometers) of cave--"a large geographical addition to Central Africa," said National Geographic Society Young Explorers grantee and expedition leader Trevor Frost.

Frost and his team hope to help build a case for making the cave system a protected UNESCO World Heritage site.

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— Photograph by Trevor Frost
 
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