The world is getting more and more accessible, but there are still places that are difficult to get to. The reasons are varied: rough terrain, difficult or dangerous conditions, politics, lack of facilities, and just plain distance.
Some places are doable, but the trouble and expense mean it's not really worth it. RealLifeLore explains the reasons no one -or hardly anyone- goes to these places. -via Viral Viral Videos
That would be... uh... its center. No?