Lacko (now Solanovatka) is a village on the outskirts of Dobromil, where high-quality table salt, also known in Western Europe, was mined from the Middle Ages. The mine was called "Saliny". In June 1941, NKVD officers drowned in the brine shaft of this mine the bodies of several hundred prisoners murdered in the Dobromil detention centre and prison. When the Germans entered the town, an exhumation proceeded. The remains of the victims, which were successfully retrieved from the mine shaft, were buried in the cemetery in a mass grave. Some of the bodies of the victims that could not be exhumed remained forever in the mine shaft. In addition, the bodies of the Jews, who were first forced by the Germans to exhume the NKVD victims and then murdered, were thrown into the same shaft.

Around 2001, a monument was erected on top of the shaft where the bodies of the murdered prisoners were drowned. Its author is Dymitr Krwawicz, a professor at the Academy of Fine Arts. The monument is very dramatic in its expression - a concrete slab features the figure of a man twisted in mortal convulsion; the slab is surrounded by seven crosses leaning over it like a tent and joined at the top by a crown of thorns. A small white chapel with an altar stands next to the memorial. The commemoration has no inscription.