Second, and maybe more to the immediate point, pilots apparently avoid North Korean airspace like their lives depended on it. Which - given that the North Korean army is totally capable of waking up one morning and intentionally downing a civilian airliner - might be literally true. Still, it makes getting there a bit of a challenge.
The visualization we've embedded below shows just how much of a challenge.
As Business Insider points out, it's kind of breathtaking how South Korea is flooded with airplanes, and then just a few miles north there is empty space. We live in an interconnected world where travelers brag about going to inaccessible places, and where airfare is increasingly affordable, and yet just across the border from one of the world's most hypermodern cities there's just nothing.
A nice little travel-based demonstration of just how strange North Korea actually is.
[Photo: Martyn Williams / YouTube]