Internment Camp 371 is a Dominion prison facility in the Gamma Quadrant. The facility was located on an asteroid and was previously used as a ultritium mine. In the 2370s, several individuals from the Alpha Quadrant were held in Internment Camp 371, including those who had abducted by the Dominion and replaced by Changelings. Others, including Enabran Tain, were prisoners the Dominion had taken.
In 2373, Tain was able to send a coded message to Deep Space 9, which was analysed by Elim Garak. Captain Benjamin Sisko later assigned Worf to take Garak into the Gamma Quadrant to try and rescue Tain and any other prisoners they would find. Worf and Garak later stumbled upon a Jem'Hadar fleet in a toh-maire nebula and were imprisoned in the camp. They encountered General Martok, a dying Tain and Julian Bashir, who had been captured and replaced by a Changeling. (DS9 episode: "In Purgatory's Shadow")
Later, Garak continued Tain's work with a transmitter and attempted to use it to contact a runabout in orbit of the camp. Meanwhile, Worf had taken Martok's place participating in brutal combat with the Jem'Hadar guards, including Ikat'ika. Garak was able to contact the runabout before Worf was killed and transport to safety. (DS9 episode: "By Inferno's Light")
- DS9 novella: The Badlands, Part IV
- DS9 episode: "In Purgatory's Shadow"
- DS9 episode: "By Inferno's Light"