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Which cave system is the longest known in the world?
Earth ScienceCaves
Quick Answer
Mammoth Cave in Kentucky, USA, is the longest known cave system, with more than 685 kilometers of mapped passages.
The Full Story
Mammoth Cave in Kentucky is the longest known cave system on Earth, with more than 685 kilometers of surveyed passages. Exploration continues, so the mapped length grows over time as new tunnels are discovered and connected. The cave formed in thick limestone layers, where groundwater dissolved the rock over millions of years. It is part of Mammoth Cave National Park, a UNESCO World Heritage Site. Its enormous length makes it a classic example of karst geology.
Key Facts
1.More than 685 km of mapped passages
2.Located in Kentucky, USA
3.Formed in limestone by groundwater dissolution
YouTube Angle
Suggested video title for this topic:
"Inside the world’s longest cave network"