Fort Jefferson as she lies in Dry Tortugas State Park. The bulbous land mass in the center is Bush Key, the skinny business scrawling down on the right is Long Key. Directly to the fort's south are the ruins of the South Coaling Dock, and no ex-coaling station would be complete without the ruins of the North Coaling Dock, which you can probably identify all by yourself. Those ruins are prime snorkling spots, as entertaining marine life absolutely loves hanging out in humanity's decrepit remains.