world’s largest cypress forest, a vast and ecologically rich wetland that stands as one of North America’s greatest natural treasures. Spanning more than 1.4 million acres, the basin contains the largest continuous expanse of bald cypress and tupelo trees anywhere on Earth, forming a unique forested swamp ecosystem.

This immense cypress forest plays a critical role in flood control, water purification, and wildlife conservation. Its towering cypress trees—some hundreds of years old—rise from slow-moving waters, their massive trunks and distinctive “knees” creating a landscape unlike any other. The forest supports an extraordinary diversity of wildlife, including alligators, black bears, migratory birds, fish, and countless plant species.

The Atchafalaya Basin is formed by the Atchafalaya River and is a key component of the Mississippi River watershed. During seasonal flooding, the forest absorbs excess water, reducing flood risks for surrounding communities while replenishing nutrients that sustain the ecosystem. Environmental scientists regard the basin as one of the most productive wetland systems in the world.

“The cypress forest of the Atchafalaya Basin is not only the largest of its kind, but also one of the most important ecological regions in North America,” said a senior environmental researcher. “It provides essential environmental services while preserving a landscape shaped by centuries of natural processes.”