I had a friend who had a plane and we flew over the "hills" a couple of times. Mt Rushmore was a "No fly " zone, but we could then flow over The Devils Tower near by. It is now a no fly zone. We were lower than the top and had mountain climbers waving at us. it might be because of us that it became a no flu zone. imagine a climber waving at us and losing his grip and ..........
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