Jockey's Ridge State Park is a North Carolina state park in Dare County, North Carolina in the United States. Located in Nags Head, North Carolina, it covers 426-acre (1.72 km)[1] and includes the tallest active sand dune system in the eastern United States. It is the most visited park within the NC park system.[2] The park is a day-use only park and has no campgrounds. Jockey's Ridge contains three unique ecosystems: the Roanoke Sound, the dune system, and the maritime forest. Often when it rains, water collects near the bottom of the dunes creating temporary ponds known as a vernal pools. Few fauna can be seen around the dunes, although some types of flora, such as tall grass, may be seen near the bottom of the dunes.