Most locals miss this park with 26,000 acres of old-growth trees and zero entry fee

It’s not a swamp. It’s something rarer.

Eighteen miles southeast of Columbia, a forest grows so tall it rivals the canopy heights of some of the world’s great temperate woodlands.

Congaree National Park covers roughly 26,000 acres of old-growth bottomland hardwood, and it costs nothing to get in. Most people in South Carolina have never been.

That’s partly because of the name. For decades, people called it a swamp.

It isn’t. What it actually is takes a little longer to explain, and the explanation is worth the drive.

10,000 years of history in one floodplain

People have lived in this stretch of South Carolina for at least 10,000 years. The Congaree people gave the park its name.

For enslaved people on nearby plantations, the dense forest served as something else entirely: a refuge. Some lived for years in the wilderness as free people rather than return to bondage.

Cypress logging began in the late 1800s, but working a floodplain is brutal, and the loggers never finished the job. That difficulty, as much as anything, is why the old trees still stand.

One editor fought for decades to protect this forest

By the 1950s, newspaper editor Harry Hampton had spent years exploring the floodplain and knew what was at stake. He started writing and pushing for protection.

When logging threats returned in the late 1960s, a grassroots campaign grew around his work. Congress established Congaree Swamp National Monument in 1976, protecting the forest from the chainsaws.

In 2003, Congress redesignated it a national park and dropped the word “swamp” from the name, because the name was never right to begin with.

Floods feed this forest ten times a year

Here’s the difference between a swamp and a floodplain: a swamp stays underwater. A floodplain doesn’t.

The Congaree and Wateree Rivers flood the forest about 10 times a year, then pull back. Each flood deposits nutrients and sediment into the soil.

The trees drink it up. That cycle repeats, year after year, and the result is a forest with canopy heights among the tallest of any temperate deciduous woodland remaining in the world. The floods aren’t a problem.

They’re the reason the trees are so extraordinary.

Fifteen tree records standing in one park

Congaree holds the tallest known examples of 15 different tree species in North America. The standout is a loblolly pine that reaches nearly 170 feet.

Bald cypress trees with trunk circumferences above 26 feet grow throughout the forest, and some of them have been standing for more than 500 years.

Sweetgum, cherrybark oak, American elm and laurel oak round out a list of champions that have earned Congaree the nickname “the Redwoods of the East.”

Standing next to these trees, the scale takes a moment to register.

Bald cypress grow wooden spikes from the ground

Bald cypress dominate the wetter parts of the park, and they come with a feature you won’t find in most forests. They grow cone-shaped wooden projections from their roots called knees.

These knees push up through the soil and water, sometimes reaching several feet in height, and they line the trails and creek banks in dense clusters.

Scientists believe they help anchor the trees in soft, wet ground.

Walking among hundreds of them rising from the forest floor feels like stepping into a different kind of world.

Two weeks each spring, the forest blinks in unison

Between mid-May and mid-June, Congaree hosts one of the rarest natural events in North America.

A species called Photuris frontalis, one of only a few synchronous fireflies on the continent, fills the dark forest with coordinated light.

The males flash in rapid, rhythmic bursts to attract mates, and the waves of light move through the trees in patterns scientists are still working to understand. The park runs a lottery to manage the crowds.

If you get a pass, go. The display starts just after sunset.

Walk above the floodplain on an elevated boardwalk

The 2.4-mile Boardwalk Loop is the park’s main trail, and it lifts you several feet off the forest floor so you stay dry even if the floodwaters have been through recently.

The trail winds through bald cypress, water tupelo and towering loblolly pines.

Stop at the Weston Lake overlook and you’ll likely spot turtles, longnose gar moving through the water, and wading birds working the shallows.

Weston Lake is an ancient oxbow, cut off from the Congaree River long ago when the river changed course.

Over 25 miles of trail push deep into the wilderness

Past the boardwalk, the park opens up into more than 25 miles of backcountry trails. The Weston Lake Loop covers about 4.5 miles and follows Cedar Creek through the forest.

The Oakridge and Kingsnake trails push further into the wilderness for those who want distance and solitude. The Bates Ferry Trail runs south to the Congaree River along a historic ferry road.

Backcountry trails can flood without warning, so experienced hikers should check conditions before heading out. Dogs can come on any trail as long as they’re leashed.

Paddle 15 miles through old-growth on Cedar Creek

Cedar Creek is a blackwater stream that cuts through the center of the park, and the canoe trail that follows it runs roughly 15 miles from Bannister Bridge to the Congaree River.

Paddling it means moving under a ceiling of bald cypress and sweetgum with herons lifting off ahead of you and wood ducks cutting across the water. The full route takes an overnight trip.

Shorter day paddles work fine too. The park doesn’t rent boats, but local outfitters do.

The 50-mile Congaree River Blue Trail connects Columbia to the park downstream.

More than 1,000 species share this forest

Congaree earned its designation as a Globally Important Bird Area in 2001, and spending an hour on the trail makes the reason clear.

Barred owls, pileated woodpeckers, great blue herons and the bright-yellow prothonotary warbler all live here. So do white-tailed deer, bobcats, river otters, coyotes and armadillos.

Alligators live in the deeper sections of Cedar Creek and the Congaree River, though most visitors never see one.

The wet-dry cycle of the floodplain creates the conditions that let so many species use the same piece of ground.

Camp in the wilderness or stay close to the trailhead

Congaree is tent-only. No RVs, no car camping.

Longleaf Campground near the entrance has individual and group sites with fire rings and picnic tables. Bluff Campground sits deeper in the park with no running water or restrooms.

Backcountry camping is free with a permit from the visitor center, and the park stays open 24 hours a day, every day of the year. One more thing: late spring and summer mosquitoes at Congaree are legendary.

Come prepared, or come in winter when the bugs thin out and the temperatures drop to something comfortable.

Visit Congaree National Park in Hopkins, S.C.

You can plan your trip through the park’s official website, where you’ll find trail conditions, current boardwalk construction closures and information on the firefly lottery.

The park sits at 100 National Park Road in Hopkins, S.C., about 20 miles southeast of Columbia. Admission is free year-round, and so is parking.

The Harry Hampton Visitor Center has exhibits on the forest ecosystem, an introductory film and a bookstore.

Ranger-led and volunteer-guided programs run regularly, and firefly viewing passes are typically available through Recreation. gov each spring.

This article was created with AI assistance and human editing.

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