One million square feet of erosion control fabric and 35 miles of polypropylene rope wrapped approximately 2.4 kilometers (1.5 miles) of shoreline. Rope diameter: 3.8 centimeters (1. 5 in.) Height range: from sea level at southern beach to 26 meters (85 ft.) at northern cliffs. Width: between 46 to 244 meters (150 to 800 ft.)