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Experts stunned by remarkable sighting inside world's largest cave: 'We see big groups'

The cave features chambers wider than airplane hangars and skylights that support underground forests Experts stunned by ...
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Ancient new shark species — dating back 340 million years — unearthed in world’s largest cave system

A rare bite into the past. The fossilized tooth of a newly discovered ancient shark species – dating back about 340 million years – has been unearthed in the world’s largest cave system, officials ...