These islands are characterized by their beautiful beaches, salt marshes, and diverse wildlife, and they offer a range of recreational activities for visitors, such as swimming, fishing, boating, and birdwatching. The Lowcountry region of South Carolina is home to a number of barrier islands, including Hilton Head Island, which is one of the most popular tourist destinations in the region. They are typically formed by the accumulation of sand and sediment along the coast, and they play an important role in protecting the mainland from the impacts of storms and erosion. 4 Queens Folly Road - Hilton Head Islandīarrier islands are long, narrow land masses that are separated from the mainland by a body of water, such as a sound, river, or bay.