This week we have another edition of New Hampshire’s Wild Neighborhoods, where we take a closer look at one of the more than 200 natural communities you can find within the confines of our state border. Communities like the Alpine Zone or Red oak, Black birch Wooded Talus , but those are pretty rare. Today we’re heading to one of the most ubiquitous ecological landscapes in the world. The Coastal Sand Dune is found in nearly all latitudes from just outside the polar regions to the equator. But there are only a few places in the granite state that you’ll find them, and as you might expect they’re all on the seacoast. And there is a particular set of circumstances that are required for Sand Dunes to form. Sand and silt made from eroded rocks further inland washes down mountain streams that feed into ever larger waterways until they reach the mighty Piscataqua and Merrimack rivers. Where the rivers meet the ocean, the water suddenly slows, allowing that silt and sand to precipitate out to