Knossa Branch Library The Knossa Branch Library was a satellite facility of the Great Jedi Library on the planet Ossus . Located in the city of Knossa , the branch library provided immediate access to the collection of the Great Library without having to make the long journey out of the city . History . When the Jedi Order commissioned the construction of the Great Jedi Library circa 5000 BBY in the distant Ooroo Canyon , Jedi Master Odan - Urr sought to build a branch of his library within the city - limits of Knossa for easy and quick access to the collective works of the Great Library . Where the Great Library ' s collection was made up of ancient scrolls , treasures , and artifacts , the Knossa branch provide remote access to the digitized collection through the use of holobooks and computer terminals . If a scholar at the branch library sought to look at a scroll or an artifact , they had the option of remotely controlling a droid at the Great Library to look through hard copies of non - digitized works . Jedi librarian s patrolled the halls of the Knossa branch and were available by appointment to assist or conduct a conference with the Great Library for deeper research . When the Cron Supernova wiped all life from the planet in 3996 BBY , the Knossa branch was left in ruins . Later , the con - artist Skavak began selling false floor plans , schematics , and maps on the black market . These maps often confused the Great Library with the Knossa branch and the Eye of Ashlanae , making it hard for historians to get an accurate idea of the actual appearance of the facilities . Layout and architecture . Erected in the rocky foothills of the Eocho Mountains within the ancient Jedi city Knossa , the Knossa Branch Library was a squat building carved out of unadorned dense stone , making it appear as if the complex was a natural feature of the hill . Crowned by four thick , domed towers , the building ' s upper levels were perched on top of a stone ziggurat . The complex featured four main levels , as well as three sub - levels ; all of which contained material ranging from Pre - Republic time to the modern history of 4000 BBY . The carved stairs leading to the main gates were unbarred , as were the doors , in line with Master Odan - Urr ' s belief that the knowledge prized by the Jedi should not be kept from any who sought it . With the exception of the highest level , the building blocked out all natural light ; instead artificial light kept the building at a constantly even light so the passage of the suns ' light did not increase the weariness of a devoted learner . Access to the Knossa Branch was granted through a large entrance way in the southern face of the complex . The first level of the Library building was dedicated to peaceful study and cool reflection , its thick utilitarian walls held a two - story arcade of stained - glass windows detailing the events of the Great Hyperspace War while holoprojector ' s displayed some of the archive ' s greatest treasures . Classrooms and lecture halls were located on the first level , as were a collection of study chambers and where Padawans and Jedi Knights alike could ponder over long forgotten lore in the still quiet of the dark stone building . Conference rooms allowed librarians and researchers alike to meet with staff at the Great Library in real time and seek guidance in deeper research . On the second level , highly ranked Lore Keeper s oversaw the many researchers and librarians that maintained the Stacks , the massive shelving systems that held the Order ' s collection datacards and reader tapes . A stone balustrade wrapped around the balcony overlooked the arcade and main entrance below . The third and fourth floors of the building contained the vast Archives of the Order , delicately cataloged by tireless archivists in a system designed by Odan - Urr . Sprouting from the fourth floor and accessible by spiraling stair wells were four wide towers containing artifacts sorted by era , all of which spanned what would later be considered the Pre - Republic and Expansionist Era s . The southeast tower , or Pre - Hyperdrive Tower , contained information gathered from civilizations which were bound to their world or star system before the invention of the hyperdrive circa 25 , 053 BBY . Following the chronological order the northwest , or Pre - Republic Tower housed artifacts that detailed the political state of the galaxy before the Galactic Republic was born in the Core Worlds . The northeast and southeast towers were known as the Early - Republic and Mature - Republic Towers respectively .