Stretching from the Gulf of Mexico to the St. Johns River, the Marjorie Harris Carr Cross Florida Greenway occupies much of the land formerly known as the Cross Florida Barge Canal. This 110-mile corridor encompasses a variety of natural habitats and offers an array of trails and recreation areas where visitors can experience Florida's premier greenway.

This segment of the Cross Florida Greenway includes a variety of natural communities such as longleaf pine sandhill, mixed hardwood and conifer forests, and wet prairies on the western end. This region is also site of an historic sea level canal "digging." This feature is a wide linear area that was literally carved out of the landscape in the 1930s as part of the original sea-level ship canal project funded through the Works Progress Administration during the Depression. Today, they exist as reforested, small-scale valleys. Because the bottoms of "diggings" are comprised of clayey soils that hold moisture, they are often dominated by loblolly pines that prefer wetter areas and soils than longleaf or sand pines. In many areas, they also offer challenging terrain for trail users.