 It is estimated that from May 1942 until November of that year, during the most deadly phase of the Holocaust in Poland, some 50,000 Jews were murdered at Bronna Góra forest in death pits.The victims were transported there in Holocaust trains from Nazi ghettos, including from the Brześć Ghetto and the Pińsk Ghetto, and from the ghettos in the surrounding area, as well as from "Reichskommissariat Ostland" (present-day West Belarus).After a century of foreign domination, Second Polish Republic became an independent state at the end of World War I. Bronna Góra was part of the Polesie Voivodeship, and remained there until the Nazi-Soviet invasion of Poland in 1939.