Park Service says Mammoth Cave now 400 miles long
by Dylan Lovan, Associated Press
February 20, 2013 02:55 PM | 1258 views | 0 0 comments | 4 4 recommendations | email to a friend | print
In this Wednesday, Aug. 3, 2011 file photo, stone formations are seen in the Mammoth Dome area of Mammoth Cave during a tour in Mammoth Cave National Park, Ky. A cave system in Kentucky that's known as the longest in the world has reached 400 miles. The National Park Service says Mammoth Cave in south central Kentucky recently added 10 miles to its explored underground length. (AP Photo/Ed Reinke, File)
In this Wednesday, Aug. 3, 2011 file photo, stone formations are seen in the Mammoth Dome area of Mammoth Cave during a tour in Mammoth Cave National Park, Ky. A cave system in Kentucky that's known as the longest in the world has reached 400 miles. The National Park Service says Mammoth Cave in south central Kentucky recently added 10 miles to its explored underground length. (AP Photo/Ed Reinke, File)
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In this Wednesday, Aug. 3, 2011 file photo, tour participants enter Mammoth Cave in Mammoth Cave National Park, Ky. A cave system in Kentucky that's known as the longest in the world has reached 400 miles. The National Park Service says Mammoth Cave in south central Kentucky recently added 10 miles to its explored underground length. (AP Photo/Ed Reinke, File)
In this Wednesday, Aug. 3, 2011 file photo, tour participants enter Mammoth Cave in Mammoth Cave National Park, Ky. A cave system in Kentucky that's known as the longest in the world has reached 400 miles. The National Park Service says Mammoth Cave in south central Kentucky recently added 10 miles to its explored underground length. (AP Photo/Ed Reinke, File)
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LOUISVILLE, Ky. (AP) — A colossal cave system in Kentucky that’s known as the longest in the world has reached 400 miles.

Mammoth Cave recently added 10 miles to its explored underground length, pushing it past the 400-mile mark, the National Park Service said.

The expansion is thanks to several “incremental additions to many parts of the cave rather than a single major discovery,” said Charles Fox, president of the Cave Research Foundation, which enlists volunteers to help explore the cave. The park service made the announcement Friday.

Each year, the popular destination in south-central Kentucky attracts enthusiasts who spend thousands of hours scouring the winding underground limestone caverns. Fox said in a statement that the group has resurveyed sections of the cave to produce maps with better detail and also added previously unexplored passages.

Roger Brucker, an author who began exploring the cave in the 1950s, said the new milestone is a payoff for all the explorers who have helped find new connections over the decades. Brucker, 83, said the explored length was around 40 miles when he began going underground.

“The fun of it to me is finding that the system is connected and how it is connected,” he said Wednesday. “Generally, it involves crawling through water, wading through water.”

The park service said Cave Research Foundation members contributed more than 10,000 hours of volunteer work at the cave and park last year. Brucker is a past president of the foundation.

Brucker said the underground expeditions are important because they add to discoveries about how water moves in underground formations. The cave systems reach into Edmonson, Hart and Warren counties.

“From an ecology point of view, it means that if you pollute one part of it, you’re likely to see that pollution migrate to other parts of the cave system,” he said.

The area’s indigenous people ventured into the cave as far back as 2,000 to 4,000 years ago, according to park officials. White settlers went into the cave in the 1790s, and for a time, it served as a source of saltpeter, an ingredient for gunpowder, including during the War of 1812.

The first tours started in 1816, and the now cave attracts about 700,000 visitors a year. Last year, Mammoth Cave National Park opened a new $16 million visitors center.

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