Sevzheldorlag (also Sevzheldorstroy, Northern Railway ITL) (Russian: Севжелдорлаг, Севжелдорстрой, Северный железнодорожный ИТЛ) was a penal labor camp of the GULAG system in the USSR.
The full name was Северный железнодорожный исправительно-трудовой лагерь НКВД, Northern Railway Corrective Labor Camp of NKVD.
Established on May 10, 1938 from subcamps of Ukhtpechlag, because of the sharp increase of the convicts due to the Great Terror.
The main operation was railroad construction.
[1] The sites of the camp were within Komi ASSR, East Siberia: at Kotlas railway station, Knyazhpogost settlement (including headquarters), and Zheleznodorozhny settlement (now the town of Yemva).