Dorovan Muck
As you look at the ground on either side of the boardwalk, you will notice a dark-colored mud, a mixture of clay and old leaves. This mud, called Dorovan muck, is eight feet thick and plays an important role in the health of the floodplain. It filters water, traps pollution, and turns pollutants into harmless compounds. By filtering water, it helps keep the floodplain and the Congaree River clean.