Duel in the Gnarls cave In 3643 BBY , during the Flesh Raider uprising on the planet Tython , a duel occurred in a cave in the Tythonian Gnarls between the Dark Jedi apprentice Callef and a Jedi apprentice . In an attempt to stop the Flesh Raider invasion of the Gnarls , the apprentice found Callef about to kill the Bith apprentice Unaw Aharo , and dueled the Dark Jedi in an attempt to stop him . Despite the apprentice ' s disadvantage of wielding a vibrosword against Callef ' s lightsaber , the Jedi ' s remarkable combat skill resulted in Callef ' s death . Prelude . During the Cold War between the Galactic Republic and the Sith Empire , the native Flesh Raider s of the planet Tython began to attack the Jedi Order and the Twi ' lek Pilgrims of Kalikori village . It would later be revealed that the Flesh Raiders were acting under the orders of the Dark Jedi Bengel Morr , the former Padawan of Jedi Master Orgus Din , who wished to destroy the Order and rebuild it into something that could destroy the Sith . Early in the uprising , in 3643 BBY , the Flesh Raiders attacked the Order ' s base in the Tythonian Gnarls , near the Masters ' Retreat . The Jedi , led by Jedi Master Derrin Weller , fought off the Flesh Raider attacks , but Master Weller was injured in the fight . Weller had already sent a newly - arrived apprentice out into the Gnarls to investigate reports of the Flesh Raiders using blaster technology , and Weller contacted the Padawan after he was injured . Having learned from a Bith apprentice by the name of Unaw Aharo that the Flesh Raiders were entering the Gnarls through a cave network nearby , the Jedi Master ordered the Padawan — who was known to be exceptionally skilled in combat — to find Aharo and seal off the cavern at all costs . The duel . Entering the cave , the apprentice was forced to fight through over a dozen Flesh Raiders , and finally reached the end of one section of the cave . There , the apprentice found a wounded Aharo being threatened by a Human Dark Jedi named Callef — in actuality , the apprentice of Bengel Morr , though Callef did not mention his master to the two Jedi apprentices . The man , who wielded a lightsaber and called himself a " true Jedi , " attacked the second apprentice when the Jedi stopped him from killing Aharo . Despite only wielding a vibrosword , the Padawan was able to defeat Callef , and the Dark Jedi was killed during the battle . Aftermath . It was at that point that Jedi Master Orgus Din arrived and witnessed Callef ' s defeat . Din thanked the apprentice for helping Aharo , and used the Force to bring down the cave ' s ceiling , blocking the path and stopping any more Flesh Raiders from entering the Gnarls . Din then took the wounded Aharo to safety , telling the other apprentice to come to the Jedi Temple . When the apprentice met with the Jedi High Council at the Temple , Master Din took on the Jedi as his Padawan — the first one he had taken since Padawan Bengel Morr , who had vanished after the Sacking of Coruscant . The discovery that Callef and his " master " were marshaling the Flesh Raiders sparked the Jedi Order to begin investigating , and the uprising finally ended when Din ' s new Padawan defeated their leader — who was revealed to be an insane Morr — and rescued Din at the Forge . Behind the scenes . The duel in the Gnarls cave was created for " " , a released by BioWare on December 20 , 2011 . The duel is one of the earliest quests in the storyline of the Jedi Knight character , and the event sets off the main storyline for the Knight on Tython . Within the cave itself , there a minimum of thirteen Flesh Raiders that may be defeated before reaching Callef , and the Dark Jedi has two Flesh Raider guards , making a total of fifteen . While there are dialogue choices with Callef that can gain alignment points , the duel will end with the Dark Jedi ' s death regardless of the player ' s choices . The duel is also mentioned in the 2012 reference guide " " , during a summary of the Jedi Knight class ' story .