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25 Surprising Indiana Facts: Limestone Landmarks, Caves & Earthquakes
Explore 25 surprising facts about Indiana, from the limestone behind iconic American landmarks to underground rivers, sinkholes, and seismic hazards.
Discover how Indiana limestone helped build the Empire State Building, the Pentagon, and 35 state capitols. In southern Indiana, learn about a river that disappears underground for 23 miles through a cave system surrounded by 1,022 sinkholes in a single square mile.
Revisit the devastating Palm Sunday tornadoes of 1965, which killed 137 people across the state, and explore the earthquake risks associated with the Wabash Valley and New Madrid…
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