Is there any indication in the lore of what (aside from the obvious answer) is at the poles of Nirn? Does Atmora connect to the north pole via pack ice? Is there land at either of the poles (like Antarctica) or is it shifting sea ice (like the Arctic). Any flora and/or fauna?

EDIT: SpaceMarine88's comment has prompted me to add - what's likely to be there in the absence of any (semi-)definitive lore...?

Hm. Anuic focal point at the northpole, padhomic focal point at the south pole.... so solid ice north, boiling chaos south? That's what I imagine.