If you were to color in the sparsely populated hills and mountains of the Bay Area as water, you would get an interesting map that makes the place look almost l

If you were to color in the sparsely populated hills and mountains of the Bay Area as water, you would get an interesting map that makes the place look almost like a bunch of island chains. There are breaks in places like Hillsdale and San Bruno Mountain that disconnect the peninsula from SF, and that is not as obvious a gap as the bay. What you say about the bridge length is interesting because I think most people don't realize the scale of distance between these island chains.