One of the lesser-known camps in France, this one was set up primarily to accommodate refugees from the Spanish Civil War, but was ultimately utilized by the Nazis for Jews and other prisoners. Nearly five thousand Jews expelled from Belgium were held at St.-Cyprien before being deported to the East for extermination.
References http://aieux-bretons-et-normands.eklablog.com/le-camp-de-concentrat... (in French)
http://www.ushmm.org/online/hsv/source_view.php?SourceId=33303
http://jewishtraces.org/camp-saint-cyprien-plage/ (in French)
https://archive.today/fRavW (basically a translation of above link)
https://www.yadvashem.org/blog/yom-kippur-in-the-st-cyprien-concent...