Located in South Carolina, just a half-hour’s drive from the capital city of Columbia, Congaree National Park preserves the largest remaining old-growth bottomland forest in North America. Congaree isn’t exactly a swamp, because most of the time no standing water covers the floor, but the Congaree River floods the area about 10 times per year. This lesser-known and uncrowded park combines the watery environment of the Everglades with the towering old-growth forests of the West. It’s a small 41 square miles, but you can’t explore it by driving. Hiking and canoeing are the only ways to immerse yourself in the primeval forest. Starting from the visitor center, the flat, easy 2.4-mile Boardwalk Loop Trail is the obvious introduction to the park. The first section is elevated as much as 6 feet, while the second section rests directly on the forest floor, offering a close view of mysterious cypress knees. Along the Bluff Trail (1.7 miles), you’ll discover a forest of pines made distinct fr...