Surprisingly challenging, but lovely. Very interesting plant life and some gorgeous views of the Appalachicola river from the bluffs. This is the closest to mountainous terrain you'll find in Florida, and local hikers with Appalachian Trail aspirations train here. The park is especially stunning when spring wildflowers are in bloom, from the first little violets and redbuds in February to the wild azaleas and magnolias in April. The older loop, described above, covers a nice variety of terrain, from upland pine forest to hardwood hammock to swamp, and even a brief section of eroded red clay and sandstone that looks like something from a Road Runner cartoon. For some extra legwork, there is a newer 7.5 mile "challenge" loop. Both loops can hiked in single day, with some planning, but it's a more pleasant trip to hike into one of the nice, quiet, primitive campsites and make a weekend out of it.