Is there a Fifth Corner?

I mean above East Canada and Greenland:

I would say, not really, for three reasons:

• those pieces, even in Canada, are islands.
• they could easily have been parts dislocated during the Flood.
• and above all: the triangle between the NE and NW corner and this "corner" is very sparcely inhabited.

So, the four corners of the world, stands. Not five, not six (sorry Cape of Good Hope, you're just an interior corner, like Cornwall or Newfoundland), not three (sorry Flat Earthers).

Four Corners of the inhabited world./HGL