Holocron Chamber The Holocron Chamber was a sealed room located in the Tower of First Knowledge , one of the five spires of the Jedi Temple on Coruscant . A branch of the expansive Jedi Archives , it was presided over by the Caretaker of First Knowledge and stored the holocrons containing the majority of the Jedi Order ' s most coveted secrets . Holocrons stored within this chamber were being actively studied or consulted , therefore they were not held in the Holocron Vault . History . Though the original towers of the Temple were destroyed in 3653 BBY during the Sacking of Coruscant by the resurgent Sith Empire , the Order , with help from the Galactic Senate , was able to draw enough funds to rebuild them by 1000 BBY . The chamber then came to house several of the most prized holocrons of the Order . During the year 30 BBY , while the Jedi High Council was dealing with Tinté Vos ' demand for Jedi assistance on the plagued world Kiffex , a holocron containing information on the Anzati Dark Jedi Volfe Karkko activated for the first time in fourteen generations . Concerned over this , Caretaker Astaal Vilbum consulted Mace Windu of the High Council , warning him of the dangers that awaited whoever was sent to Kiffex . Windu had already sent Jedi Knight Quinlan Vos to investigate , causing him to send additional Jedi to assist in the defeat of the reawakened Karkko . In 19 BBY Darth Sidious , the Dark Lord of the Sith responsible for the Clone Wars , was discovered to be Supreme Chancellor of the Galactic Republic . While the Jedi prepared the Temple for , the few fully trained Knights and Masters stationed within were no match for the sheer number of clone troopers of the 501st Legion . Led by Darth Vader , the clones swept through the Temple , slaughtering the Jedi and securing the complex ' s treasures . While many Jedi tried to escape with holocrons , most were cut down before they were able to escape . By the end of the night , the Temple was secured and most of the advanced holocron technology within the Chamber remained largely unscathed . Sidious ' desire to plunder the Jedi ' s trove of Sith holocrons undoubtedly caused the chamber to be carefully picked apart , ensuring that any useful information be saved and preserved . While the room was left undisturbed for years after the initial study , in 2 BBY , Darth Vader ' s secret apprentice broke into the Tower of First Knowledge in order to complete the Jedi Trials . After killing the Shadow Trooper s stationed in the main entrance of the Tower , Starkiller was able to cross the damaged bridge leading to the chamber . Inside , he found a large holocron resting on the rotunda ' s central pedestal . When activated a Gatekeeper demanded the assassin complete the Trial of Spirit in the bowels of the Temple . Leaving the chamber , the Sith apprentice found himself in competition with a twisted version of himself . After defeating the Stalker , he left the Temple , the Trials complete . The chamber would once more lay in silence for another decade , standing even after the Galactic Empire was driven off Coruscant . With the resurgent Jedi Order growing , Luke Skywalker entered the ruined edifice to find any information on the Order ' s teachings . However , his search was short lived ; although Jedi historian Tionne Solusar was able to restore and scan the Archives , the Towers of the Temple were leveled by the " Lusankya " eruption from beneath the planet ' s cityscape . While the Temple remained in use for several more years , the entire structure was ruined by the Yuuzhan Vong War . A few years after Coruscant was secured by the Galactic Alliance , Chief of State Cal Omas ordered the Reconstruction Authority to rebuild the Temple according to salvaged schematics . As the new Jedi Temple took shape , the Towers were restored to their former height , though they were encased in a large transparisteel pyramid . Every room restored , the Holocron Chamber once more held the Order ' s treasure for the next century . Layout . Sealed off to all but Jedi Masters , the rotunda contained the vast majority of the Order ' s most coveted Jedi holocrons . Located on the first level of the Tower of First Knowledge , the Chamber was set opposite the main entrance way . Accessible by a bridge that spanned the Spire ' s central chasm , Jedi had to pass through a sealed doorway to view the holocrons . The doorway was marked with the Order ' s crest , leading to a hall lined with pentagon - shaped consoles behind which several holocrons were stored . The hall led into the rotunda , in the center of which sat a squat pedestal from which a holocron could be studied . Amidst the rotunda , several holocrons floated in a repulsorfield above the heads of visitors .