Although flying can be quite exhausting, especially on the long-haul flights, it can offer a unique perspective on the world. Looking down, so many extraordinary sights can be seen. That is one reason I particularly like the polar routes. Since it is not always possible to know exactly where you are, you can only assume the location and also what you are seeing. In this case, it is clearly polar ice sheets breaking up, and this is most likely somewhere over Greenland or northern Canada.