What point of earth can you move only to the north?

If a person is on the southern pole, he can only move north. After all, the poles are the extreme points of the planet. Similar can be said about the North Pole, from where any step man will be in the southern direction. The South Pole of the Earth is located approximately in the central part of the continent of Antarctica, and the North – in the Arctic Ocean. About these points of the planet stands even to know that their coordinates differ from other places on the ground, as they do not have long time and are mentioned only by their latitude.