The majority of intercontinental internet traffic flows through undersea cables; Cable Map is an interactive charting tool that lets you look at the state of undersea cabling today and in the past.

The map by itself is pretty neat but the coolest feature of Cable Map is the ability to plug in dates to see the cables that existed before, were constructed since, or were in place during that year. You can also hone in on specific cables like the Asian-American Gateway. Hit up the link below to play with the map.