Glaur Glaur , known to its inhabitants as the Dominions of Nehu , was an ancient fortress built by the primordial Nehushta during the Dawn War . It was located in northern Gontal , in the center of the Glaur Barrens . Description . Before its destruction , Glaur was a metallic , many - walled building of strange appearance and impossible size . Its largest spire reached the clouds , while its lower chamber was in the Underdark , near Abeir ' s core . After its destruction during the Spellplague , Glaur became a strange plagueland composed of the following features : Brindol ' s Cut . Named for the leader of the surviving genasi of Glaur , Brindol , this miles - long fissure divided Glaur ' s ruins into two separate regions . The sheer canyon walls that composed the fissure opened onto many tunnels and corridors that were once buried basements of the fortress , most of them reaching way down to the Underdark . The southwestern portion of Brindol ' s Cut was the territory of the Dominion of the Burned faction . The Birthing Furnace , a powerful artifact crafted by Nehushta , was located somewhere in this area . Glittering Wall . The Glittering Wall was what remained of the original walls that surrounded Glaur . With the appearance of a many - faceted mirror several hundred feet high and nearly a mile thick , the Glittering Wall was one of the few features of Glaur that survived both the War of Fang and Talon and the Spellplague nearly intact . Some believed that inside its many chambers were located hidden primordial artifacts and a living remnant of Nehushta herself . Hob ' s Cut . A smaller fissure that extended out of the fortress core to the southeast of the Glaur Barrens . Like the larger Brindol ' s Cut , the fissure provided access to several corridors and tunnels . Thousands of tiny firefly - like insects lived in one of those chambers , and usually swarmed at night on anything nearby to feed on it . Survivors of those attacks were sometimes infected by a strange pestilence known as glow fever . Quicksilver Lake . A lake made of a silvery substance . Though it wasn ' t poisonous , some quality of the water made sentient creatures fall into a deep depression they couldn ' t recover from , until finally they gave up on life . Some believed the lake was made up of the tears Nehushta wept when she was killed by the traitorous dragon s . Rusted Sands . The Rusted Sands were a desert area made of rusted , blood - colored iron . Those who explored this area and were able to leave its borders believed the area had a sentient force that drew things to the center of the Rusted Sands and never released them again . Storm Spire . This milk - white spire , nearly a thousand feet wide at its base , reached the sky but its absolute height remained forever obscured by a lightning - lit thundercloud that never dissipated . The Storm Spire was one of the few portions of the original fortress that survived the Spellplague . Composed of white opaque crystal capable of magic al self - repair , the spire drew a supernatural storm and channeled the electricity into the earth , radiating the area out and down for several miles . The Storm Spire was somehow related to the creation and the propagation of the anaxim s , and people called the surrounding area the " Dominion of the Mindless " . Sapphire Vortex . The Sapphire Vortex was a deadly plagueland dominated by a fiery blue vortex that spun ceaselessly in the sky . The territory under the vortex was known as the Dominion of Bone . The Spellplague was particularly strong in this area , and spellscar s produced by the vortex were more powerful than those earned in other plaguelands . History . Before the separation of Abeir - Toril , the fortress of Glaur was erected by Nehushta to serve as a central front during the Dawn War . After the primordials were defeated and Ao split Abeir - Toril into the twin worlds of Abeir and Toril , Glaur was transported to the world of Abeir . Nehushta isolated herself in her fortress until the War of Fang and Talon , when she was killed by traitorous dragons . However , both dragons and humanoids avoided the abandoned fortress out of fear for thousands of years after the war . In 1385 DR , under the pretense of opening new trade routes , Prince Nathur Hethkantan led an ill - fated expedition to the fortress in order to search for any remains or lost treasures of Nehushta , in hopes of being able to revive her or , if it proved impossible to revive a primordial , at least to have a holy object to properly revere her . However , the Spellplague happened shortly after and when the blue fires reached the world of Abeir and made contact with Glaur , the fortress exploded in a cataclysm as potent as the Tearfall , that rocked the continent of Laerakond and sent it to the world of Toril and created the Glaur Barrens . The ruins of Glaur became a strange plagueland that was inhabited by the survivors of the cataclysm , including a plaguechanged prince Nathur , who became the ruler of the area below the Sapphire Vortex . In time , the land became known as the Dominions of Nehu by its inhabitants . In 1469 DR , an invasion of anaxims destroyed a genasi community who lived in the ruins . A firesoul genasi named Brindol unified the few genasi who survived the anaxim invasion , and under his leadership they were able to conquer a small section of the ruins known as the Dominion of the Burned . As of 1479 DR , only a few individuals in all Laerakond knew anything significant about the history or geography of Glaur . Among them was the notorious Gontese guide and explorer , Larrana Vestel . Inhabitants . As of 1479 DR , the ruins of Glaur were inhabited mostly by the anaxims . A community of a few firesoul genasi lived in the Dominion of the Burned , while Prince Nathur and his undead servants lived in the area known as the Dominion of Bone .