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Geography

Why Sinkholes Form in Karst Limestone Regions

Quick fact

In the United States, sinkhole damage costs more than $300 million per year, and Florida alone sees thousands of new sinkholes reported annually.

Why this is interesting

Imagine the ground beneath your feet suddenly crumbling into a giant hole—no earthquake, no warning. What silent process could be hollowing out the earth for years before it finally gives way?