Zertinan Caverns The Zertinan Caverns are a location in the land of Ivalice in " Final Fantasy XII " . They are a vast network of caves that run under the regions of Dalmasca , Jagd Yensa , and the Bancour regions , connecting the continents of Ordalia and Kerwon . The Caverns can be accessed from Dalmasca Westersand , Ogir - Yensa Sandsea , Nam - Yensa Sandsea , and the Ozmone Plain . Zertinan Caverns is an optional area and can be deadly for a party wandering inside too early in the game , so it is suggested that a party of at least an average level of 20 + . The Esper Adrammelech can be found inside , as well as numerous Hunts and Rare Game . Treasures . Zertinan Caverns has many treasures . The most common item treasures are common recovery items and gambits . With the Diamond Armlet the common item treasure is Knot of Rust , and the rare item is a Holy Mote or Elixir . In Invitation to Heresy a treasure along the southwestern wall can be the Barbut . In the Sandfalls , the treasure in the northeast corner can be the Iron Hammer , but the player must open a path by rolling down a boulder to build a bridge to get there . The Hourglass Basin area has a cut - off area in the east that can only be accessed via a hidden passage from the Save Crystal area . The treasure at the very end of this area can be a Chanter ' s Djellaba . In the northeast of the Drybeam Cavern the player may find the Feathered Cap . In Halls of Ardent Darkness , which exits to the Ozmone Plain , a treasure can spawn with the Traveler ' s Vestment in the east of the area . Darkened Wharf . These chests only appear in the " International Zodiac Jab System " version . Canopy of Clay . This chests only appear in the " International Zodiac Jab System " version . It does not respawn . Quests . Adrammelech . Adrammelech is an optional Esper , but to obtain him the party must defeat him as a boss in the Athroza Quicksands area of the Zertinan Caverns . He is a flying opponent who uses Lightning , and as soon as the player steps into the area , Shambling Corpses will emerge out of the ground and will keep on spawning at deeper areas of the cavern . This makes it an okay grinding spot after Adrammelech has been felled . Hunts . The Marilith is a Rank V Mark that becomes available after vanquishing the Wyvern Lord . The hunt is petitioned by the tavernmaster in Rabanastre ' s Sandsea bar . The Marilith is found in the Invitation to Heresy area of the Zertinan Caverns , in the sunlit room ( bottom right portion of map , where the shape of the room looks like the letter " C " ) , but the party must remain in the area for five minutes before it will show up . The Catoblepas is a Rank VI Mark whose hunt becomes available after the events in Giruvegan . Catoblepas can be found in the Hourglass Basin area and is petitioned by War - chief Supinelu in Jahara . Once in Hourglass Basin , the player must use the south exit to The Undershore , then use the secret path located after the save crystal , to find War - chief Supinelu waiting . Rare Game . Molen can be found in the Hourglass Basin part . To get it to appear , the player needs to head into the secluded section of the area ( the area with the Grenades and where the Catoblepas is fought ) , which can be reached via The Undershore by walking between the two " sandfalls " , southeast of the save crystal . The player must wait roughly 10 to 15 seconds and they should see the Molen appear on the other side of the ravine . To find the Alteci the player must have spoken to the " Huntmaster " in Phon Coast and defeated Thalassinon , which will trigger the start of the Rare Game quest . The player must build a chain of twelve Mallicant s ( or Shambling Corpses from Athroza Quicksands ) in The Undershore area . Players do not need to leave and reenter to trigger the Alteci ' s appearance : one must simply scroll his spawnpoint off the minimap . The player should do this by going near an exit and then heading back towards the center of the room . To make the spawning easier , the player can start the Mallicant chain in another area , as long as the twelfth perishes in The Undershore . The next area , Halls of Ardent Darkness , has many Mallicants — if the player kills eleven Mallicants here , moves into The Undershore and kills another , this will satisfy the requirements for the Alteci to spawn . Musical theme . The theme of the location is simply called " The Zertinan Caverns " .