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Q&A: Chris Groves - Exploring Underground Water Systems in Mammoth Cave

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Renowned cave explorer Dr. Chris Groves goes deep into Mammoth Cave to see how torrential rainfall above affects underground rivers and ancient passages.
Video: Following the Hidden Waters of Southwest China's Karst Region

Video: Following the Hidden Waters of Southwest China's Karst Region

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A look at what is commonly considered the greatest Karst landscape on earth, and its secret waters that flow underneath.

China Karst | Slideshow

Karst Landscapes in China, Across the Continents

Although caves and karst landscapes often serve as a destination for fourth grade field trips, they certainly have direct relevance to the 1.5 billion people who live in karst regions -- many of whom rely on karst aquifers for drinking water.

'Romeo and Juliet' of China Captured in Karst

Among all the scenic spots in Shilin, the rock of Ashima in the Small Stone Forest is the most famous. This rock resembles a girl, with a kerchief on her head and a bamboo basket on her back. The shape and expression are surprisingly lifelike. Tourists dress up in traditional Sani -- a branch of the Yi ethnic group -- dresses to strike the same pose next to the stone girl.

Connecting Caves, Karst Landscapes and Climate Around the World

Scientists who study caves and karst landscapes are like all researchers. They look for data that addresses the broadest and most significant questions possible. It turns out that caves do a good job of providing significant answers. Those that contain animal fossils and records of ancient humans, for example, have been shown to have great value for understanding climate change and past environmental conditions.