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Little Rock, Ark. — Arkansas homeowners in parts of the state face a moderate risk of sinkholes, and experts say early warning signs often appear quietly before noticeable ground failures occur.
According to the U.S. Geological Survey, sections of Arkansas sit atop limestone, dolomite, and other soluble rock formations, particularly in the northern and north-central regions of the state. This type of terrain, known as karst geology, can slowly erode as water moves underground, forming voids that weaken support beneath the surface. Prolonged wet periods, heavy rainfall, and shifts in groundwater levels can influence how quickly these changes develop…