Doing some light reading through the Wiki, I came across this in the section about the Ice Wall.
"and that in every direction "human ingress is barred by unsealed escarpments of perpetual ice," extending farther than eye or telescope can penetrate, and becoming lost in gloom and darkness. Some hold that the tundra of ice and snow stretches forever eternally."
First, perhaps this is more of a suggestion for improvement - where are the citations for reference? Where did the quote for "human ingress" being barred come from, and where is the evidence that supports this? It just seems a bit matter of fact, and doesn't allow me to further investigate the claim. Sure, I could spend a bit of time googling the quote hoping to find its source., but I would expect (just as any good research paper does) is to cite the source in a footnote/bibliography with a numerical reference. Anywho, cheerio.