About seventy kilometres east of Mauthausen and about 100 kilometres west of Vienna, lies a small town called Melk with about 5000 people. Here in the towns’s military barracks, the Nazis set up a satellite camp subordinated Mauthausen. The camp existed between, April 21, 1944 and April 15, 1945, and about 14,400 prisoners of different nationalities were used as slave labor in constructing a large tunnel complex between Melk and Loosdorf. The purpose of the tunnel was to place parts of the German war industry (Steyr-Daimler-Puch AG) inside the mountain. This due to the intense allied air raids severely damaged the German war industry. The slave labor was devastating and the number of deaths increased that  Nazis had to build a crematorium in order to get rid of the bodies. Of the approximately 4,800 prisoners who died in Melk, about 3,500 were cremated in the crematorium just outside the camp. Between April 11 and 15, the prisoners were evacuated to Mauthausen and Ebensee.

Current status: Partly preserved/demolished with monument (2008).

Address: Schiesstattweg 8, 3390 Melk.

Get there: Car.

My comment:

The former camp area, or at least parts of it, is within a military area and it is doubtful if any barrack remains. Fully preserved is the crematorium but with limited opening hours. However, in 2008 it was possible to borrow the key to the crematorium from an elderly lady in a nearby house. But I doubt when this is read that she is still alive or leaves at the house.

Follow up in books: Kogon, Eugen: The Theory and Practice of Hell: The German Concentration Camps and the System Behind Them (2006).