The Hinzert concentration camp was established in 1938 to construct the Westwall. There were 27 sub camps connected to the main camp. Originally, it was a police detention camp, and officially came under the control of the SS-WVHA on February 7, 1942. Hinzert was unique among concentration camps in the sense that it had an autonomous Gestapo (secret state police) interrogation squad inside the camp (which was uncommon, as the concentration camp system was run by the SS, an entirely different organisation).
Hinzert was originally built for 560 prisoners, but in reality continually housed between 800 and 1,200 prisoners during its existence. In total, estimates are up to 20,000 prisoners. Official camp records accounted for almost 300 deaths. This death count was extremely low because Hinzert was not only a small camp, but most of the time it also acted as a transit camp, with prisoners arriving there only to leave to another destination a few days later. But even so, researchers have found the official death count to be too low, with a more realistic figure being an estimated 1,000 victims.
On November 21, 1944, the Hinzert camps came under jurisdiction of the Buchenwald concentration camp, and was dissolved on March 2, 1945 when U.S. troops reached the city of Trier.
The journey to Hinzert is part of a series of journeys that I'm undertaking to photograph the blue skies precisely above the (last known) location of every single one of the 1,075 concentration camps that have ever existed, as part of an photography/book/installation project called The Blue Skies Project. The project has proven quite immense and almost impossible to hold on to single-handedly – with staggering logistics to match – but I'm hanging in there.