@CNN: A 15,000-acre area in northwestern Indiana is the United States’ newest national park https://t.co/ZRgqyb3elF https://t.co/nC3BqL2WB9

@CNN: A 15,000-acre area in northwestern Indiana is the United States’ newest national park https://t.co/ZRgqyb3elF https://t.co/nC3BqL2WB9