Trochenbrod or Trohinbrod, also Sofievka or Polish Zofiówka (pl) (Russian: Софиевка – Sofiyevka, Ukrainian: Трохимбрід, Trokhymbrid), was an exclusively Jewish shtetl (a small town) located before World War II in the Wołyń Voivodeship of the Second Polish Republic, at an area of 1,728 acres (6.99 km²). It was situated about 30 kilometres (19 mi) northeast of Łuck in present-day western Ukraine. After the joint invasion of Poland in September 1939 by the Soviet Union and the Third Reich, the town was annexed for two years into the Ukrainian SSR by Joseph Stalin. However, it was completely eradicated in the course of the Nazi German Operation Barbarossa (1941) and the ensuing Holocaust.