East Brother Island in San Francisco Bay boasts a treasure missed by most boaters passing by: its 1920s-vintage foghorn.
For generations they've competed with seagulls as the signature sound of coastal America. But that "signature sound" of the foghorn isn't what it used to be. Listen carefully, and you'll hear the traditional seaside soundscape changing. Reporter: Craig Miller
Watch a video of East Brother Island's vintage foghorn in action:
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