But Jim White made it his life's work to make sure the public would see and enjoy the cavern.

VOA: special.2009.12.07

A few years later, a settler named Abijah Long also found the entrance and went into the cavern.

VOA: special.2009.12.07

An elevator lowers you into the world of Carlsbad Cavern, the big cave at Carlsbad Caverns National Park.

VOA: special.2011.04.11

The purpose of the well is to determine the structural status of the cavern as well as the pressure of any gas that might be inside of it, he said, adding that the last mechanical integrity test performed on the cavern was done in late 2010.

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Famed more for its setting than its food, Alux is in a cavern full of stalactites.

BBC: Mini guide to the Yucat��n Peninsula, Mexico

The walk took in the cliffs from the Devonian era, and the caves at Kents Cavern.

BBC: Torbay's prehistoric origins recognised by UNESCO