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The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep! is a Geographical Fact in the Geographical Facts category.
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Fact Comments
773 days ago
lola
how about the cave in the Palawan,Philippines?
105 days ago
KIlroy
This figure quoted, 560,000 metres must be a typo, 1000 metres is almost a mile, so this cave is Five Hundred Miles Deep ???