Six-sided Fort Jefferson sits on Garden Key in the Dry Tortugas and was constructed over 40 years in the mid 1800s to stand sentry over the important shipping channel. (Photo courtesy Maria Aurelia/TNS)
Six-sided Fort Jefferson sits on Garden Key in the Dry Tortugas and was constructed over 40 years in the mid 1800s to stand sentry over the important shipping channel. (Photo courtesy Maria Aurelia/TNS) Handout TNS
Six-sided Fort Jefferson sits on Garden Key in the Dry Tortugas and was constructed over 40 years in the mid 1800s to stand sentry over the important shipping channel. (Photo courtesy Maria Aurelia/TNS) Handout TNS

Searching for the lost wrecks of the Dry Tortugas

January 17, 2016 07:30 PM

UPDATED January 17, 2016 07:32 PM

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