In the bipolar model, the North Pole has never actually been discovered.
http://www.bibliotecapleyades.net/tierra_hueca/tierrahueca/contents.htmIt is well known that the North and South Magnetic Poles do not coincide with the geographical poles, as they should were the Earth a solid sphere, convex at its poles. The reason why the magnetic and geographical poles don't coincide is because, while the magnetic pole lies along the rim of the polar opening.
In support of the above conception regarding the magnetic pole being situated in the rim of the polar opening, Palmer refers to the following facts: Between each magnetic pole around the Earth pass magnetic meridians. In contrast with geographical meridians, which measure longitude, the magnetic meridians move from east to west and back again. The difference between the geographical meridians, or true north and south, and the direction in which a magnetic compass points, or the magnetic meridian of the place, is called the declination. The first observation made was in London in 1580 and showed an easterly declination of 11 degrees. In 1815 the declination reached 24. 3 degrees westerly maximum. This makes a difference of 35. 3 degrees change in 235 years, which is equal to 2,118 miles. Now if we make a circle around the Pole, with a radius of 1,059 miles, so that it is 2,118 miles in diameter, this would represent the rim of the polar opening along which, in this case, the North Magnetic Pole traveled from one point to its diametrically opposite point on the circle, 2,118 miles away, in 235 years.
According to Marshall Gardner, the rim of the polar opening, which is the true magnetic pole, is a large circle 1,400 miles in diameter.
No one has ever discovered either the North or the South Pole:
http://www.bibliotecapleyades.net/tierra_hueca/tierrahueca/Chapter5.htmNo one has managed to travel inside this large circle which measures some 1,400 miles in diameter.
The orbits of most the northern circumpolar stars are inside this large right cylinder.
No one has ever visited this area to actually verify that the Polaris will be observed at an exact 90 degree angle overhead.
This is how the northern star trails looks like from Alaska:
While seen from the equator they look like this:
That's about as far as the optical devices in use today will take you.