Mammoth Spring is the second largest spring in the Ozarks. It flows at an amazing average rate of almost 10 million gallons an hour! All this water is the direct result of rainfall over the high plains of southern Missouri. The rainfall percolates down through the soil to a vast system of interconnected cavities that eventually converge and reappear aboveground as a scenic 10-acre lake with an island in Mammoth Spring State Park.
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