The name is most commonly used to refer to a relatively quiet , undeveloped section of coastline stretching from Mexico Beach on the Gulf of Mexico to St. Marks on Apalachee Bay in the U.S. state of Florida .
The name refers to a mostly quiet , undeveloped ( few buildings ) part of coastline from Mexico Beach on the Gulf of Mexico to St. Marks on Apalachee Bay in the U.S. state of Florida .