The camps of Mauthausen were the last to be liberated. In total Mauthausen had over 40 sub-camps. If you want to learn more about the sub-camps, you can find information through an interactive map, accessible on the Mauthausen Memorial's website.
As the Allies advanced, the camps that had been set up in the occupied areas were “evacuated” and partially destroyed by the Nazis. From 1944 onwards, prisoners were sent on so-called "death marches" or death-transports to the center of the Nazi German territories, with the intention to kill them during transport or in the targeted camp. Thus, the death toll in the camps of Mauthausen was at its highest in the last months of the war.
From January to May 1945, about 40,000 prisoners died in the Mauthausen concentration camp complex. In this final phase, many Jewish prisoners were sent to Mauthausen, arriving for example from Auschwitz. Whilst Mauthausen was primarily a camp for male prisoners, women arrived in large numbers from 1944 onwards.