Internment Camp 371 was a Dominion prison facility located on an asteroid orbiting a gas giant planet. In the camp, Jem'Hadar weapons were always set on maximum, which would vaporize prisoners for the smallest infractions.
Internment Camp 371 was in operation in the 2370s. Originally built as an ultritium mine, the camp held many survivors of the Battle of the Omarion Nebula following the destruction of the Romulan/Cardassian fleet, including Enabran Tain.
Tain used an old life support system built into his barracks to create a subspace transmitter. The transmitter was used to send a message to Elim Garak. When Garak was captured attempting to track down the signal in 2373, he and Worf were sent to the camp, where they discovered Julian Bashir and Martok had also been imprisoned there, following their capture and replacement by Changeling infiltrators. Tain died at the camp shortly after, and Garak was able to change Tain's modifications to allow the group to contact their runabout left in orbit, and escape. (DS9: "In Purgatory's Shadow", "By Inferno's Light")
Several months later, General Martok noted that his time in Internment Camp 371 had "dulled" his reflexes. Worf himself told Benjamin Sisko of his experience of tova'dok with Martok in the camp. (DS9: "Soldiers of the Empire")
In a Section 31 holodeck program, Luther Sloan questioned the ease with which Bashir and the group had escaped Internment Camp 371. In the program, Internment Camp 371 was supposedly where Bashir became a Dominion sleeper agent after being brainwashed by Weyoun. Sloan suggested Bashir had been allowed to escape to gather information the Dominion would later collect. (DS9: "Inquisition")
Species imprisoned Edit
Background information Edit
Internment Camp 371 was conceptually based on a Nazi prison camp from the film The Great Escape. (Star Trek: Deep Space Nine Companion, p. 422) In the script of "In Purgatory's Shadow", the camp is described thus; "This is a domed over area on the asteroid surface. It serves as the central area/prison yard for a Dominion Internment Center [....] This facility is for an elite group of P.O.W.s, people who the Dominion is especially curious about." 
The exterior of Internment Camp 371 was designed by Illustrator John Eaves, who planned it in a concept sketch. (Star Trek: Deep Space Nine Companion, p. 423) The look of the facility's interiors was added to by Production Designer Herman Zimmerman, Set Decorator Laura Richarz, Construction Coordinator Thomas J. Arp, Property Master Joe Longo, as well as other members of the creative staff. The main part of the Dominion prison was built as a large set, on Paramount Stage 18. The same set even included a crawlspace area containing the sabotaged life support system; this tightly confined place was adorned with fiber-optic lights and a mix of tubes, and was painted with drab colors. "It was very grim," Richarz said about the camp. "Everything was dark gray and kind of dirty." As usual, the group devised some creative uses for commonplace items, transforming CD racks into light fixtures for hanging above the beds in the prisoner barracks, and turning plastic Christmas tree stands into plant-ons to stick on the walls. (Star Trek: Deep Space Nine Companion, pp. 427-428)
In the game Star Trek: Deep Space Nine - The Fallen, the exterior and interiors of Arduria station resemble Internment Camp 371.