blaaaahhhhh goes the foghorn

One of my favorite things is the Golden Gate Bridge. So often, it's shrouded in fog, and the boats coming in with goods from across the Pacific (and leaving to head out) cannot see the bridge even when they are within a few hundred feet of its towers. So, there is a system of foghorns that kicks in, which I have enjoyed listening to over the years laying in bed, going biking, or just walking around in the north and west parts of the city. Here's the detail.

And here is a cool picture of the bridge in the fog: