Belsavis prison Belsavis prison was a large - scale Republic prison complex located on the planet Belsavis . Built in the years before the Great Galactic War with the Sith Empire , the complex was built over and surrounding a series of ancient structures built by the Rakata n Infinite Empire in the age before the Republic , and it served two purposes : to imprison the Republic ' s worst and most powerful offenders , and to study and contain the horrors within the structures left behind by the Rakata . Description . The Belsavis prison was a massive detention center located on the planet Belsavis in the Outer Rim Territories . The prison was divided into three official districts : the Minimum Security Section , the High Security Section , and the Maximum Security Section . A fourth unofficial region of the prison was the Rakatan complex nicknamed the Tomb , though it was largely unexplored and not part of the Republic complex . However , there was also a fifth district : Section X , the original site of the prison when it was first established . Section X . Section X was the site of the first Republic attempt at building the prison . Minimum Security Section . The Minimum Security Section was located within one of Belsavis ' s tropical rifts and served as the location of the prison ' s main administrative facilities . By other prison standards , the section was considered to be escape - proof , but by Belsavis standards the Minimum Security Section was considered to be the lowest level of security that could be permitted for its inmates . Most of the prisoners in Minimum Security were pirates , murderers , gangsters , and other violent criminals who were humanoid and willing to communicate with the prison authorities ; prisoners who needed more specialized holding facilities were shipped out to other districts . The rift within which the section was built was criss - crossed by towering walls several meters thick , and a number of subeterranean cell blocks were located throughout the region . Aphor tree s were a common sight in the Minimum Security Section , particularly in the area known as the Aphor Grove , where the Imperial Military converted the remains of an early Republic explorer camp into a fortified base . The Minimum Security Section had two primary points of access to the High Security Station , which lay to the west : HiSec Prison Access was a canyon that linked the two districts ' northern regions , and the HiSec Facilities Access lay to the south , providing access to the prison maintenance facilities that were located in the southern end of the High Security Section . The Primary Thoroughfare ran down the middle of the section , with various roadways branching off to link different sections of the prison . The Prison Administration Center was located in the northeastern corner of the district , and a significant number of defensive systems , turrets , and walls protected access to the subterranean Administration Center Command . The Inmate Recreation Zone was located near the Administration Center , and allowed prsioners to work in crop fields as well as other activities . The Prisoner Intake facility and Detainee Processing Center were located along the eastern cliffs , and much of the section was divided into various yards such as the Terrorist Detention Sector , Mercenary Containment Cells , Carbonite Prisoner Storage , and Larcenous Prisoner Holding , into which the Minimum Security prisoners were divided depending on their reputation , status , and capabilities . The Varactyl Vale was a large open valley that was located on the western side of Minimum Security , and it was named after the large number of varactyl creatures that made their home there . A Rakata vault designated Vault K - 23 was located in the area , as were Republic Guardposts Alpha and Beta , which kept watch over the path to the generators built into the western cliffs that powered Minimum Security . A second Rakatan vault , Vault K - 66 , was located in the southern end of the district . High Security Section . The High Security Section of Belsavis prison was home to both cell blocks and the complex ' s medical , scientific , and engineering facilities . Water , foodstuffs , electricity , and other necessities were produced in the High Security Section , and the science and medical teams in the district were tasked with developing and maintaining methods to contain the complex ' s more dangerous and unusual inmates . High Security ' s cell blocks were designed to hold small communities of nonhuman prisoners with similar cultural or physiological needs ; official prison policy was to keep prisoners in species - tailored conditions with specific foods , atmospheric mixtures , and other factors in order to keep them more peaceful , despite the fact that many alien species were able to live alongside Humans . As a result , High Security was home to cell blocks such as the Gand , Gen ' Dai , and Trandoshan Vault s , as well as Rattataki Block Alpha , the Rodian Internment , and the Gran Exile . The Tomb . The Tomb , officially known as the Deep Prison , was the Rakatan prison complex whose discovery originally led to the establishment of Belsavis prison . History . The ice planet of Belsavis was discovered by the Republic During the Great Galactic War , the prison played host to Sith Lords , Mandalorians , rebels , violent species , political prisoners , and more . The most dangerous inmates were sent to The Tomb : the most secure and secretive portion of the complex that was still staffed and operated by ancient Rakatan warden droids . Around 3643 BBY , at the end of the Cold War , the Sith Empire learned of the prison ' s existence and launched a full - scale operation to free Imperial prisoners of war and to disrupt Republic operations on the world . The massive prison complex became a warzone that ultimately destroyed much of the facility itself and released many of the ancient Rakatan terrors . Behind the scenes . Belsavis prison was originally titled " the Tomb , " in the Holonet , but by the time of the game ' s release , the Tomb had been established as only the Rakatan part of the complex