Wanderlust World Wanderlust World The Outer Banks, a chain of barrier islands off North Carolina and Virginia, are backed by dynamic sand dunes formed by wind blowing beach sand inland. These dunes can reach 100 feet (30 meters) in height and constantly shift shape. They serve as critical natural buffers, absorbing wave energy during storms and protecting the islands from erosion. The dunes also provide habitat for specialized plants and animals and are popular for recreation like hiking, biking, and birdwatching.