Savannah National Wildlife Refuge

Savannah National Wildlife Refuge 
Savannah National Wildlife Refuge has “…29,452 acres of freshwater marshes, tidal rivers and creeks, and bottomland hardwoods. About half the refuge is bottomland, composed primarily of cypress, gum, and maple species. Access to these areas is by boat only. ”  Phone 843-784-2468  Here is their website.    Reviewed on Trip Advisor   Maps  Trail Map
Thanks to Ranger Amy Ochoa for the following information:
The only wheelchair accessible trail is at the Visitor Center is an 800 ft. long paved trail “that runs from one side to the other. ”  However there is “an outstanding 4.25 mile wildlife drive that visitors can drive around and get … the same wildlife viewing opportunities as walking on the trails…..pretty much anywhere along it there’s room for a car to pull to the side, stop, even get out and look, while still allowing room for a vehicle to pass by.”
?  “The trails are all the same surface; grass covered, earthen dikes.  They’re not always mowed, depending on the availability of heavy equipment operators to run the large mower, so things like fire ants and snakes could be present and not easily seen.  Like any earthen path, they would all be subject to holes, bumps, etc. that could trip up someone not sure-footed.”