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Near The Ohio River Is An Unbelievable Cave System That's One Of Indiana's Best Natural Wonders

Thanks to a high concentration of limestone beneath the ground, Indiana has caves galore. This is especially true in southern-central Indiana, where there are many clusters of tourist caves ripe for ...
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America's 5 states with the most caves

Explore the world's longest known cave system and see colorful, subterranean light displays in these incredible caves that ...