List of places in BIONICLE This is a list of places in the BIONICLE universe . Overview . Although not fully made obvious in storyline so far , there are two levels to the BIONICLE world : the surface , and the underground . Matoran were never supposed to live on the surface ; almost all known lifeforms live in large domed caverns and the few exceptions are those who wandered to Mata Nui , those stranded on Voya Nui , and those who escaped the Pit . Because of this , the surface world is largely unexplored ; and few know that there even " is " a surface above them , referring to that area as " beyond the sky " . The following are known differences between the surface and the underground worlds : Major Places . Mata Nui . Mata Nui is a tropical island , named after the Great Spirit . When the underground city of Metru Nui fell in the Great Cataclysm , the Toa Metru fled and discovered this island on the planet ' s surface . After rescuing the city ' s inhabitants from the Visorak and evacuating them here , they became Turaga and led the Matoran in settling villages . The Matoran would live on the island for a thousand years , despite frequent attacks by Rahi that were controlled by Makuta . Recently , the path to Metru Nui has been reopened , and the Matoran have left Mata Nui in order to repopulate the city . Metru Nui . Metru Nui is an island city located far beneath the surface of the island of Mata Nui , and is one of the most vital locations in the BIONICLE universe . It was the original home of about a thousand Matoran prior to their immigration to Mata Nui . Metru Nui was completely devastated by the Great Cataclysm and the following Visorak invasion , but the Matoran have finally returned after a thousand years and have fixed the damage . Metru Nui is the northernmost location known to Matoran ( though not at the planet ' s northern pole ) . Voya Nui . Voya Nui is an island floating on the oceans of the planet ' s surface , south of the island of Mata Nui . The land mass broke off of an underground continent a thousand years ago during the Great Cataclysm and landed on the planet ' s surface . It has since become anchored in place by Mahri Nui ( see below ) . A number of Matoran had been sent to the region from Karzahni ' s realm ( see below ) at almost the dawn of time . Since then , they have had to struggle to survive , especially after the region became a stranded island . Unknown to the Matoran , a powerful Mask of Life was also hidden on Voya Nui , under the volcano , Mount Valmai . The island had came under attack by a group of Piraka who wanted the mask , but it is once again free and now openly under the protection of Axonn . Voya Nui has since returned to the underground continent from which it broke . Mahri Nui . Mahri Nui is a city of Voya Nui that had sunken into the sea , to a place where it is completely surrounded by the Pit ( see below ) . Though the city and its Matoran inhabitants continued to survive thanks to air bubbles that keep out the water , they were constantly besieged by a group of warlords called Barraki . Mahri Nui has since been destroyed , with its Matoran evacuating and rejoining the Voya Nui community . Karda Nui . Beneath the underground mainland that Voya Nui broke off of is Karda Nui , which is considered to be the core of the universe . A Matoran now living in Karzahni ' s realm has described the core as " the world that feeds the world . The wellspring of flame that blazes bright , yet burns none but its bearer . And he , oh , he it burns until there is nothing left , not even ashes . " ( The place is sometimes referred to by the shortened phrase , " the world that feeds the world " . ) Specifically , he helped build the Toa canisters there . Since Voya Nui has broken through the " sky " , water from the sea outside has been rushing in , but because the location is so large it is nowhere near flooded . The Brotherhood of Makuta has begun attacking in an attempt to take over the core of the universe . Spherus Magna . Spherus Magna is the home of the Great Beings , Glatorian , and Agori . It was also the home of the former Elemental Lords of Stone , Sand , Water , Fire , Ice , and Jungle , these are also the main six elements of Spherus Magna . In the old days of Spherus Magna , each of the six tribes were ruled by an Elemental Lord , beings created by the Great Beings themselves . One day , two Agori from the village of Iconox found a strange liquid which had the power to either mutate , or to destroy . That substance is called Liquid Protodermis . The Elemental Lords held a meeting about what to do with it . The Elemental Lord of Ice claimed it , for it was found on his land . A quarrel broke out , which eventually led to a war . This was called the Core Wars . Two Agori were sent out by the Great Beings to get a sample of this strange liquid . They succeeded in bringing it to the Great Beings , but they were to late . The war had caused so much to the planet , that it exploded into three planets , Bara Magna , the largest , and the two smallest , Bota Magna , and Aqua Magna . See Core War for more . Bara Magna . After the Shattering , most of the Agori and Glatorian stayed on Bara Magna , a great wasteland . At first , everyone worked alone to survive , but each tribe came back together . This time , they had no leader , for the Elemental Lords disappeared . They might have been destroyed during the Shattering , or maybe the Great Beings had destroyed them for causing the war , no one knows . All they did know was that they needed to work together to survive . Because of the Core War , The Great Beings designed robots called Battera which killed anything or anyone with a weapon on sight . These Battera had the power to make themselves look like anything . The Skrall , a kind of sapient being , were the really only ones affected by the Battera . Because the Skrall were warriors by nature , they always carried weapons . after a while , various Skrall outposts were found destroyed and deserted . Only one outpost of Skrall survived , but the outpost itself was destroyed . As the only Leader Class Skrall left , Tuma led his remaining Skrall forces south , near the other Agori villages , were they plundered and terrorized the villages and villagers . With the help of most of the Glatorian , Mata Nui , and Agori , Bara Magna got rid of the Skrall , and Bara Magna was safe again , but not for long . Makuta Teridax , the head of the Brotherhood of Makuta , now possessing Mata Nui ' s old robot body , now sought to destroy Mata Nui . With his army of the remaining Skrall , Piraka , and Rahkshi , he attacked Bara Magna . Mata Nui , now possessing a large robot body too , battle Teridax on ground . In the end , Mata Nui slammed Teridax ' s head into an oncoming moon and destroyed him . With his last remaining power , Mata Nui reunited Bara Magna , Bota Magna , Aqua Magna , and the rest of Spherus Magna ' s fragments , and recreated Spherus Magna . Although all of the Agori , Toa , Matoran , and Glatorian were free , there was always something to mourn over . Mata Nui was now dead , but his spirit was still alive , but it left the people of Spherus Magna to choose their own path . Bota Magna . Bota Magna was one of the three main remains of Spherus Magna which was completely Jungle . It also held the last remaining intelligent Vorox . Aqua Magna . Aqua Magna was another of the three main remains of Spherus Magna which was completely water . Other places . Artakha . The Matoran speak of legends of a " Great Refuge " where no darkness can enter ; where one can work safe from harm . However , they are mostly considered just that - legends . But Artakha does exist , under the rule of a being also named Artakha . It is home to some of the world ' s most accomplished Matoran builders and crafters , and their work has made Artakha into what is likely the most technologically advanced city in the BIONICLE world . Daxia . Daxia is the Order of Mata Nui ' s secret headquarters . Most of Daxia ' s attractive features are hidden from unknowing visitors : There is little fresh water to be seen , but it collects in underground lakes . The temperature is amazingly hot , but this allows rare plants to thrive . The Rahi there are savage , but they will only attack each other if they are provoked . The Order of Mata Nui fortress is inhabited by Order members only ; the Order keeps no servants or slaves to tend to their needs . It was built by the first members , those who oversaw the construction of Artakha and Karzahni . The fortress is frequently updated with state - of - the - art weaponry ; more than enough , the Order believes , to repel any potential invasion on the off - chance that their enemies discover their existence . And in the worst - case scenario , the Order is fully prepared to destroy Daxia and take the Order ' s secrets to the grave . Destral . Destral is the Brotherhood of Makuta ' s base of operations . It is dominated by the Brotherhood fortress complex including labs , armories , prisons , etc . ; all equipped with traps and hidden weapons intended to catch intruders . However , the Brotherhood does not actively discourage others from setting foot on Destral - they need subjects for their experiments , after all . The Brotherhood chose Destral for their home in part because it has large amounts of energized protodermis ; a necessary part of many experiments . Destral is extremely tough to find , as it changes locations from time to time using a massive dimensional gate . How the Brotherhood summons such a gate is unknown . Karzahni . Where legends stated that good workers were sent to Artakha ( above ) , they said that poor workers would be condemned to a nightmarish world ; one shrouded in darkness and even hotter than Metru Nui ' s Great Furnace . This land had no name , but was referred to by the name of its ruler , a being called Karzahni . Odina . The headquarters of the Dark Hunters . Odina is far from any trade routes and has no neighboring lands ; the Hunters believe the location of their sanctuary is unknown to all outsiders . Once inhabited , the Shadowed One and " Ancient " had killed off the natives , and made it their home . All day , airships and boats can be seen carrying Dark Hunters on their missions . Odina is characterized by its sheer , hundred - foot - tall cliffs on all sides of the island ; there is only one passage down to a shore called " Nidhiki Beach " ( named for the noted traitor , as this was the spot where he was infamously mutated ) . These cliffs only add to the defenses of the death - trap - filled Dark Hunter fortress and training grounds , which take up most of the island ' s southern region . Recently , the Toa Nuva were allowed to infiltrate and breach Odina . While there , Toa Pohatu used his power over stone to affect the fortress , which would cause it to crumble to dust after they left . The Pit . The Pit is the place where the Order of Mata Nui banishes the world ' s most vile beings and traitors to the Great Spirit beyond redemption . It was once in an underground cavern , but the Great Cataclysm caused the dome that surrounded it to be destroyed , exposing the Pit to the ocean on the planet ' s surface . The Pit flooded and the inhabitants escaped into the ocean , where something in the water immediately mutated all immersed in it into aquatic forms . This allowed the prisoners to survive but - no longer able to breathe air - they were unable to escape to the surface , so the sea has become effectively an extension of the Pit . Some time later , the island of Voya Nui floated into that region of ocean , and Mahri Nui sank to a point where it is resting on the Pit ' s upper reaches . Some current inhabitants of the Pit are a group of warlords called the " Barraki " , Nocturn , and now Brutaka . All other prisoners have scattered across the sea bottom , most of them becoming scavengers ; these escapees are currently being hunted by the Pit ' s robotic guards . Coincidentally , both the Visorak and the Piraka have been described with the term " creatures from the pit " , but series writer Greg Farshtey has said that this is at least a different pit ; and it is possibly a figure of speech not directly connected to the actual location . Xia . Xia is the homeland of Roodaka and her people , lean black - armored weaponsmiths called the Vortixx . The female Vortixx are the rulers of Xia ; they are the managers and product designers , and the only ones allowed to travel from the island . The males do all the physical labor . Xia ' s most prominent feature is a sentient peak known only as " The Mountain " . The Mountain reacts to climbers by opening crevasses under them and swallowing them whole . It has become a rite of passage for two Vortixx , one male and one female , to climb up the Mountain and back . Pairs that succeed are rewarded - individuals that succeed at the expense of their partner , even more so . Beyond the Mountain , Xia is completely industrialized , with every inch covered by weapons factories , warehouses , etc . There is no clean air and no fresh water , as the factories completely pollute both . Roodaka has also mentioned acidic grass and rains of fire . Xia was once ruled by Pridak , who chose it to be the center of weapons production for his kingdom . After he and the other leaders of the League of Six Kingdoms were banished to the Pit , Xia continued producing weapons for whomever was willing to buy . The most prominent buyer came to be the Brotherhood of Makuta , particularly in the form of battle rams and other siege engines for the Visorak armies . The Vortixx also invented Cordak blasters and Zamor launchers . When the Kanohi Dragon was deported from Metru Nui , it was relocated to Xia ; Roodaka said that " In your city , this is a monster . On my island , it is . . . an ill - tempered pet . " The Vortixx are now claiming that they don ' t know the Kanohi Dragon ' s current location , but the Order of Mata Nui believes that they are secretly studying it in order to base new weapons off of it . Xia welcomes anyone willing to buy their goods , and is currently doing good business by selling weapons to both sides in the war between the Brotherhood and the Dark Hunters ; production has even increased due to a rumor that the League of Six Kingdoms will return . Unfortunately for them , Botar chose Xia as a place to banish the Tahtorak that had been set loose on Voya Nui , and the creature has since gone on a rampage . Fighting against the Kanohi Dragon , their battle is currently laying waste to the island . The buildings , factories , and even their infamous Mountain was damaged in the destructive chaos . Zakaz . Zakaz was once a beautiful island with advanced cities and abundant resources . Its people , the Skakdi , lived in relative peace with their neighbors . Then the Brotherhood of Makuta interfered : Makuta Spiriah , claiming to be a renegade but probably working under orders , arrived 75 , 000 years ago and began tampering with the Skakdi , giving them elemental and vision powers . He then left the island under the eye of the Visorak for a while , but the Skakdi overthrew them and began fighting each other . Either Spiriah ' s tampering had affected the Skakdi ' s minds as well as their bodies , or perhaps the new power just went to their heads ; but whatever the reason , every minor disagreement escalated into a full - scale war . Now Zakaz is nothing more than a wasteland , with the remaining Skakdi fighting over what little is left . The only free zone is the island ' s central water source , but there ' s no telling how long this truce will last . The Brotherhood has declared the island quarantined - one of the only decisions that the Order of Mata Nui concurs with - with only the Dark Hunters daring to go there to recruit new members . But even this is risky ; six Skakdi who joined the Hunters later dared to betray them , calling themselves " Piraka " . Dark Hunter watercraft are currently in place around the island as a precaution against the Piraka , who the Shadowed One believes may return to Zakaz if they manage to secure the Kanohi Ignika . One faction on Zakaz has apparently formed an agreement with the island of Xia , as supply shipments from that island have been left on the shore only to disappear , meaning that the balance of power could soon shift . Zakaz is home to a number of Tahtorak , whom the Skakdi have used as mounts in the past . Highly intelligent , the Tahtorak do not take kindly to this , and one dying specimen revealed to an Order of Mata Nui member that they planned to strike at the Skakdi when the time is right . One Skakdi horror story concerns a terrifying being called Irnakk , who is brutal and destructive even by Skakdi standards . Zakaz is located south of the realm of the Karzahni , several days travel from Metru Nui . Barraki Ehlek also lived in the seas surrounding Zakaz , before his exile to the Pit . Zone of Darkness . The Zone of Darkness is a pocket dimension where no light exists , and is the home of the fearsome Zivon monster . It is known by various other names like " Zone of Shadows " , " Field of Shadows " , etc . Kahgarak can use their Rhotuka spinners to open gates to this Zone , either summoning the Zivon or banishing enemies . Krahka and Tahtorak were last seen being sent to the Zone of Darkness with a Zivon , but unknown to all recently escaped when Brutaka opened a dimensional gate to there . They then reappeared on Voya Nui . Unamed Locations . Several other locations have been mentioned in passing in relation to major characters ; here is what we know so far :