
Fort Jefferson on Garden Key, Dry Tortugas
Landform
A coral-reef atoll of small keys. Fort Jefferson occupies Garden Key. Nearly all of the park is water.
Field note
The National Park Service administers Dry Tortugas National Park, about 70 miles west of Key West. Fort Jefferson stands on Garden Key. Nearly all of the park is open water and reef. There is no road. Visitors come by ferry or seaplane. Biscayne, on another plate, is the reef closer to the mainland.





