Arrow of the compass, as known to one of its end pointing North and the other South. Is there on earth a place where the compass needle both their ends pointing North?
This place on earth, of course, there is. This is the geographic South pole. Whatever side of him to go, the direction is only one in the North, because around him throughout the North. Therefore, the compass needle placed at the South pole, both their ends will point to the North. Similarly, the compass needle placed at the North geographic pole of the Earth, its two ends will point to the South.