Green Mound

Green Mound is one of the largest Pre-Columbian shell mounds, or shell middens, in the United States. Located in Ponce Inlet, Florida, the peak of the mound is the highest elevation in the small city. While it once stood at forty feet above sea level, a combination of public works projects on the nearby roads and natural erosion have reduced the height of the mound by about 10 feet.^[1]

• http://en.wikipedia.org/wiki/Green Mound