Svirlag, SvirLAG (Svirskiy Lager' – Svir Concentration-Camp, Russian: Свирлаг, also Свирьлаг / СвирЛАГ – Свирский концентрационно трудовой лагерь) was a Soviet forced labour camp run by NKVD's GULAG Directorate.
It was located on the river Svir (hence the name Svirskiy in Russian) in the forests by the town Lodeynoye Pole, 244 km north-east of Saint Petersburg, in Leningrad oblast, Vepsland – the land of the Vepses, operated in the 1930s (Joseph Stalin's time) and onwards.
SvirLAG concentration camp was supplier of wood to Moscow and Saint Petersburg.
The convicted inmates worked in mines extracting mica, stone and clay.
Sampson Sievers – hieromonk (born of English mother) of Saint Petersburg's Alexander Nevsky Lavra was imprisoned and tortured in this camp (from 1932, what is witnessed by archival documents and personal testimonies), though survived.