Cracks of Doom

The mess left behind by the destruction of the Elven Cloud Castle of Fire, that was 'catastrophically destroyed'Elven View of Timeline by the casting of the GSOV by the elves. It was the Cloud Castle of Fire. 
The location of the 'fifth' flying city, according to SwanfeatherDay 65 - Far Haven - Tripwires. 
Shrouded in mystery, the land itself seeming to seek to guard against intruders into the area. Few traverse these high plains without suffering for their audacity. Insanity, poisoning, loss of memory, unnatural ageing, and many a disappearance are common threads woven into the tales of woe which tell of the place. The black, constantly shifting sands of the desert terrain are frequently veiled in dust clouds, which the mountains surrounding the area hold within their grasp for months on end during the springtime. Finally, in the summer, the storms are of such anger that they reach up to the mountain summits, whereupon an ill-wind, blowing no one the least bit of good, carries the dust across the Island. The storms abate, their anger sated, but only for a time, thence to rise once more the following year. In the nearby city Northlake, when the dust-laden Wind of Doom blows from the west, folk seal their windows and stay indoors, few daring to brave the choking, billowing clouds of fine sand and dust.Email2020-09-08 10:20
The party has speculated the the unpleasant effects of the Cracks of Doom are the result of the 'fallout' of the crashing of the flying city there.Zoom 2021-01-07 21:00 
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The Warlord Saratak crossed the Cracks of Doom and was driven 'half mad' by the experience. However, it doesn't seem to have diminished his ability to rule the major city of Far Haven. According to Swanfeather, “Apparently, he had to prove to himself that what he was now seeing was true and not just another distortion caused by the Forgetting."
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Prevously known as the Plains of Dust Sparrowsight: “Well the main corrections that had to be made were pretty superficial, replacing place names obviously and for some reason the Cracks of Doom used to be know as the Plains of Dust – but that was about it if I remember correctly.” Day 21-27 – The second week in Northlake
Could this be somehow related to the 'last Rune' in the Legend of Sorleaf? till all that was left to explore was the one plain plane without a Rune upon it. This he knew he was not to activate but in his hungered insanity he could not resist the call and summon it he did - Sorleaf
----Kinogel: Cracks of Doom, well most historians seem to agree that the place turned into a shithole about the time that the Elves left. But most people seem to disagree on what caused what… or even if there is a connection.”Days 11 - 13
Northlake#Western District: Another residential area, mainly containing the Ariel community, the houses in this quarter are all characterised by not having westward facing windows. This quarter is the most affected by the dust that blows is from the Cracks of Doom, and often the streets are covered with a fine layer of dust that turns to sludge if it rain.