https://en.wikipedia.org/wiki/Shark_Island_Concentration_Camp

I concur with others who estimate the total lives lost is in the 10s of thousands, I've read similar.

Another thing is... rather than call what the Germans did to the Namibian groups the "Black Holocaust", I find it infinitely more chilling that most of the horrors inflicted by the Nazis in Europe were initially TESTED on Africans in Namibia.

The concentration camps, the torture, the dismemberment etc. They sent hundreds of Africans' skulls back to Germany for experiments to validate their racial theories.

Apparently it was this guy, Eugen Fischer, whose work on Africans inspired Hitler while he was writing Mein Kampf and also formed the basis of the Nuremberg Laws:

https://en.wikipedia.org/wiki/Eugen_Fischer

And to put Fischer in context... most people recall hearing about this guy during the holocaust, Josef Mengele:

https://en.wikipedia.org/wiki/Josef_Mengele

who was literally the most diabolical doctor in the Nazi regime.

The connection to Fischer is that MENGELE LEARNED/PERFECTED ALL HIS EVIL TESTING FROM FISCHER, who was the Director of the "Kaiser Wilhelm Institute of Anthropology, Human Heredity, and Eugenics" while Mengele worked there during the Nazi years.