During the Carboniferous, the sea retreated westward and was replaced by large swamps growing in river deltas.

With more than half its territory below 200 meters in elevation, the plain contains some of the world's largest swamps and floodplains.

The bulk of the land in the region is forested and large swamps inundate areas of low elevation.

It prefers large, well-vegetated swamps, but moves to open water after breeding or in dry periods.

There are large swamps in the south portion of town, some of them draining into the Otter Kill.

There are many wetland areas with large swamps and open woodlands.

It inhabited the large swamps of the Carboniferous Period.

Some of the world's largest swamps are found along major rivers such as the Amazon, the Mississippi, and the Congo.

This is one of the largest swamps in the world, covering an area larger than Switzerland.

It is one of the largest and most primitive swamps remaining in the United States.