Nature and Wildlife on Hilton Head Island

Pinckney Island National Wildlife Refuge occupies the causeway between Bluffton and Hilton Head, half a mile before the bridges, and most visitors drive past it for a week before someone tells them it is there. It covers 4,053 acres across Pinckney, Corn, Big and Little Harry and Buzzard islands, and is open daily from sunrise to sunset with no entry fee.

Understand what it is not before you go. There are no restrooms, no drinking water, no visitor centre and no staff on site. Dogs are prohibited on all refuge land. Beyond the small parking area everything moves on foot or by bicycle, and the surface is flat gravel and grass road, which makes a bike an excellent decision in summer heat.

The destination for most people is Ibis Pond, roughly a mile in from the car park, about two miles round trip at a flat walking pace. In spring and early summer the pond becomes a colonial wading bird rookery: white ibis, snowy and great egrets, herons nesting in the low trees over the water, with alligators cruising below in a relationship that is more symbiotic than it looks. Go early, take water and take insect repellent. The longer loops out to Osprey Pond and Shell Point add miles without adding difficulty, and the marsh views at the far end are the best on this side of the island.

Six hundred and five acres of forest, freshwater lagoon and wildflower meadow sit inside Sea Pines, which is either a contradiction or the whole point of how this island was planned. The preserve has entrances off Lawton Drive and Greenwood Drive, is open sunrise to sunset, and is included once you are through the Sea Pines gate.

Two marked loops do most of the work: a shorter route of roughly a mile and a longer one of about two, signed with coloured arrows. They pass Lake Joe and Lake Mary, the Warner W. Plahs wildflower field, a boardwalk over the marsh, and Fish Island, where there is a covered pavilion with picnic tables.

The Shell Ring Trail from the Lawton entrance leads to the Sea Pines Shell Ring, a circular deposit of oyster shell roughly 4,000 years old, built by Late Archaic people who lived here long before any recorded history of the island. It is a low earthwork rather than a monument, and it takes a moment to read what you are looking at. Archaeologists still argue about whether rings like this were village middens, feasting sites or something ceremonial. Walk around it rather than on it.

Two rules catch people out: bicycles are not permitted on the preserve's walking trails, and swimming is not allowed in the lagoons. Both make more sense once you have seen the alligators.

Two prehistoric shell rings survive on Hilton Head, and they are among the oldest built structures on the American coast. The Sea Pines Shell Ring sits in the Forest Preserve, reached from the Lawton entrance, and dates to roughly 4,000 years ago. Green's Shell Enclosure Heritage Preserve, a small state-protected site within Hilton Head Plantation, is a later earthwork and enclosure.

What you see is a low circular bank of oyster shell, soil and occupation debris, often overgrown and easy to walk past. What it means is still debated. The rings were built by Late Archaic people over generations, and interpretations range from the accumulated refuse of a ring-shaped village to deliberate construction for feasting or ceremony. Both may be true of different rings.

They are protected archaeological sites. Do not dig, do not remove shell, do not climb the bank. Interpretive signage at both sites explains more than a guidebook can.

The island's human story continues well past the rings, and the Coastal Discovery Museum at Honey Horn is the place to pick it up. Its 68-acre property has marsh boardwalks, a live oak allée and a seasonal butterfly enclosure, with free access to the grounds and donations encouraged. It is also the best single introduction to why this landscape looks the way it does.