edition.cnn.com/interactive/2012/03/world/mauritania.slaverys.last.stronghold/index.html
I have 'sat' on this article for a few weeks, not knowing if it were voyeuristic in some manner, especially as it came out the same time as the north Korea one - but I know so many of you love keeping up with what's going on in the world. It's long and harrowing, be warned.