Congaree National Park, 100 National Park Rd, Hopkins, SC 29061. Phone: 803-776-4396. The largest remnant of old-growth floodplain forest remaining on the North American continent. Museum and boardwalk, canoe and kayak rentals from area outfitters. FREE Ranger paddled canoe tours on the weekends by reservation. NO entrance fee. There are a limited number of free primitive camp sites, in two or three campground areas. Obtain a permit from kiosks or bulletin boards found at the camp areas. No facilities available except portable toilets and fire rings. There is also a 2.4 mile boardwalk that takes visitors on a 1.5 hour tour through the swamp. This is a relaxing and fun experience, you get to see ALL SORTS of critters.