From 1937 to 1938, the Sandormoch uranium near Medvezhegorsk, administratively belonging to the Powieniec settlement, was the site of mass murder of Karelian citizens and prisoners of the Belarusian-Baltic NKVD. From 27 October to 7 November 1937, 1111 prisoners from the Solovetsk islands - representatives of science, culture, Catholic priests, Polish and German citizens - were shot here. Most of the victims were men aged 25-45. At least 214 Poles were among those murdered. These victims were rehabilitated in the 1950s and 1990s. Despite this, there was a long conspiracy of silence around this crime, and there were even attempts to attribute it to the Finns (who supposedly committed it during World War II). A few months later, on 27.10.1997, thanks to the efforts of the Polish consulate in St. Petersburg, a Polish parish and financial support from the Council for the Protection of Struggle and Martyrdom Sites, a cross with a memorial plaque in Polish and Russian was placed on the mass grave. The inscription reads: On the 60th anniversary of Solovetsk prisoners - Poles and priests who found eternal rest on this land. Compatriots. 27.10.1997". Nearby is a second commemoration - an irregularly shaped vertical slab with an inscription in Polish and Russian: "To the memory of Poles - innocent victims of Stalinist repressions". Next to the slab, a small wooden cross was placed in 2007 with a plaque with the inscription: "To the memory of Poles - victims of the communist system - who died here, as well as in all corners of Soviet Russia. Students from Poland. July 2007."