Almas Almas was a terraformed planet in the Cularin system . Its moon , Dorumaa , was a captured satellite , which underwent its own terraforming . History . An anomaly in itself , Almas was a molten , terrestrial planet orbiting beyond the usual range for its kind , and due to this it received little sunlight . Despite its hot core , Almas was not very geologically active . It had only two small mountain ranges . The planet ' s atmosphere was initially filled with poisonous gases like phosphorus and methane , until Sith Lord Darth Rivan , aiming to settle there , developed the kaluthin grass to help alter the atmosphere . Almas had no surface water , but there were underground lakes upon which the kaluthin drew and to which settlers would later built wells . The kaluthin was a success , given that all Almas ' water was located underground , and continued to thrive there for centuries . On the leaves of the kaluthin were phosphorus deposits that glowed with a faint light . Due to these deposits , when the kaluthin covered the planet , the planet itself radiated an " aura " . Over the centuries , the kaluthin spread across the planet and created a highly oxygen - rich atmosphere . However , trace elements of phosphorus and methane could still have detrimental effects on those who spent extended periods of time outside without a breath mask . The plants ' kilometers - deep taproots also brought up heat from the planet ' s core , warming the surface . In addition , the purple - green grass gave the planet a distinct aural glow , mainly from the phosphorus it consumed . This living growth was unusually countered by the dark side energy on the planet , which originated in the desert region and slowly spread . The Jedi measured the spread to be one meter per year . Darth Rivan built there his Sith fortress , at some point before 1250 BBY . The castle was located on the desert side of the planet . It was built on this planet in hope to gather dark side energy from the Force - dense Cularin system . It was here that Darth Rivan tried to create an corps of Sith battlelord s , but he was betrayed by his apprentice before he could do so . After decades of living there , Darth Rivan was expelled by the Jedi Knights during the New Sith Wars in the Battle of Almas . Parts of the fortress were destroyed , but its core resisted blaster fire . The Jedi left the planet , ignoring the remains of the building . The kaluthin , thriving even without Rivan , kept Almas from being worth mining . It grew everywhere besides near the Sith fortress , and its roots delved deep . What little mineral worth the planet had was not worth the added expense of removing the kaluthin from a mining site . However , the planet became a gardenlike site instead of the nightmare it had been - except around the Sith Fortress , where no life could thrive . The kaluthin also processed the phosphorus and generated a glow that illuminated the planet from itself instead of from the sky . After Reidi Artom re - discovered the system in 232 BBY , two Jedi , master Qornah and his Padawan Kibh Jeen , came to Almas to research Rivan ' s fortress . The Sith fortress corrupted Jeen , who slew his master , took over the asteroid belt pirates , and started the Dark Jedi Conflict ( 188 - 181 BBY ) . After the Conflict ended , a Jedi school was founded which grew into the Almas Academy , the headmaster of which was Jedi Master Nerra Ziveri , and then his former apprentice , Master Lanius Qel - Bertuk . The town of Forard grew up around the Academy . The Academy and Forard were built directly upon the kaluthin , which did not seem to affect the plant at all . There was also a kaluthin Forard research station near the town , where possible transplants of kaluthin to other planets were analyzed . Almas was the only planet in the system not occupied by clone troopers during the Clone Wars . In circa 19 BBY , the Dark Jedi Garth Ezzar attacked Almas and destroyed the Almas Academy , killing most of the Jedi there . Months after the Clone Wars , agents of Bail Prestor Organa infiltrated the ruined temple of the Almas Academy , and found it infested by dark side spirits . They managed to retrieve a holocron through which Jedi Master Denia was able to learn Farseeing techniques which enabled her to learn the identity of the Nazren . The ruins and surrounding area were also home to the Dark Lizard s of the Sith ; a species of Hssiss dragon that was thoroughly permeated with the dark side of the Force . During the Galactic Civil War , the Rebel Alliance established a base on Almas , near to the ruins of the Jedi Academy . Rumors of Alliance activity there reached the Galactic Empire , so Admiral Firmus Piett dispatched a group of Imperial agents to Almas , to investigate . Shortly after the agents arrived , the stormtrooper platoon that had been assigned to protect them went missing . The agents soon found the Rebel base , but it was abandoned . It was covered under a large amount of foliage and barricades had been erected by the Rebels , to protect them from attacked by dark lizards , Believers and t ' salak s . A rescue party sent by the Alliance then arrived and they assumed that the Imperials had caused the disappearance of all their comrades in the base . Years were calculated on the planet and elsewhere in the Cularin system using the " After Artom " system of time measurement .