[blam]

" Hapgood also happened to be from a town where there is an underground culture that believes the earth flips on its axis now and then."

I think it has been proven that the magnetic poles 'flip' from time to time. But, I have difficulty with the axis 'flip.' (what a mess that would be, huh)

[RightWhale]

with the axis 'flip.' (what a mess that would be

But, see, there is a mess. Whole civilizations died at the same time. Acres or miles of mammoths were crushed and frozen instantly. There are flood myths all over the world. It wouldn't have to be a 180 flip, or even a 90 flip. Just a small flip, a quick shift, enough to move the north pole say from Hudson Bay to the present north pole.