Hollow Earth

[C-JEAN]

Hi, pole fans.

I did see/read recently that the first submarine to
cross under the ice via the north pole was the Nautilus.

http://www.thecarolinascoop.com/history803.html

On August 3, 1958, the U.S. nuclear submarine Nautilus accomplishes the first undersea voyage to the geographic North Pole

http://library.osu.edu/sites/exhibits/na...wards.html

On March 17, 1959, the nuclear submarine USS Skate surfaced at the North Pole

http://www.history.com/this-day-in-histo...1209892723

This Day in History 1958: Nautilus travels under North Pole

. . .etc. . .etc. . .

EDIT to add:
As Ra said, the earth is not like a tennis ball. The center is liquid iron.
Also, I k now that Russia have put their flag, under water, on North pole.

Blue skies.