This cache is located on Tiger Branch in Highlands Hammock State Park. The park is open from 8:00 am until sunset, 365 days a year, including all holidays. There is a fee to enter the park.
The German freighter Rhein was in Mexico when World War II broke out. In December 1940, she attempted to make her way back to Europe, but was caught by British and Dutch warships (with intel from the US Navy) near the Dry Tortugas. The Germans scuttled the ship to prevent its capture.