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Indianapolis, Ind. — Indiana homeowners in parts of the state face a moderate to high risk of sinkholes, and experts say early warning signs often appear quietly before serious ground failures occur.
According to the U.S. Geological Survey, sections of Indiana sit atop limestone and other soluble rock formations that can erode as water moves underground. This type of terrain, known as karst geology, can gradually form underground voids that weaken support beneath the surface. Shifts in groundwater levels, prolonged wet conditions, and seasonal temperature changes can accelerate the process…