Jungfernhof Concentration Camp (Latvia)

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

The Jungfernhof concentration camp (Latvian: Jumpravmuižas koncentrācijas nometne) was an improvised concentration camp in Latvia, at the Mazjumprava Manor, near the Šķirotava Railway Station about three or four kilometers from Riga (now within the city territory). The camp was in operation from December 1941 through March 1942, and served as overflow housing for Jews from Germany and Austria, who had originally been intended for Minsk as a destination.

Of the approximately 4,000 people transported to Jungfernhof, only 148 persons survived.