The Chasm Preview: Formation and Early History
At long last, the Chasm will be released in patch 2.6, in just over a week from now. This post series will preview the Chasm using lore that already exists in the game (no leaks) to help paint a picture of how this place came to be, and what happened there before the Traveler arrived.
Let’s start with how the Chasm formed, and how it relates to western Liyue’s ancient civilizations.
DISCLAIMER: This post series will be spoiler and leak free. It will also be relatively free of speculation or theorizing, but I will state if and when I am making an assumption about a piece of information. Still, this is all just my interpretation of the lore - information may be incomplete, I may misunderstand something, and I also may miss some details. I have done my best to provide a starting point, but it is by no means definitive or exhaustive - and please correct me if there are mistakes :)
A Star Approaches
The story of the Chasm begins over 6000 years ago in-game, placing it millenia before the Archon War. The majority of the formation event is currently discoverable in Records of Jueyun Volume 6: Hidden Jade. It states that the Chasm was formed when a star descended to the “barren plains west of Liyue,” a detail of note given that Liyue’s land historically has periods of high floods followed by the seas being raised by Rex Lapis, such as in Lingju Pass + Qingxu Pool, as well as Dihua Marsh (once a plains land). When the star landed, a fragment of it may have broken off (“legend has it”) and landed in northern Lisha, forming a basin-like shape into the valley that is visible from Mt. Tianheng. As Dunyu Ruins is the northernmost portion of Lisha before the Minlin province begins at Tianqiu Valley, it is commonly theorized that this meteorite fragment would have formed Dunyu Ruins’ geography specifically.
Dunyu Ruins as seen from the top of Mt. Tianheng. Notice the "stepped" rock formations to the right and spiral shape reminiscent of promotional pictures for The Chasm.
This star, however, had its own “temper” that differed from the rocks within the earth. The author claims that the star did not appreciate the discordance from the Archon War, and after nearly 3,500 years of resting in that western plain, the star actually “leaped away towards the heavens,” despite the earth formation of the Chasm itself pleading with the star to remain with it.
When the star fled, the people discovered bounteous fields of jade in the strange chasm formation left behind. It is unclear whether this jade already existed beneath the earth at this location, or whether the star’s impact created it, though it should be noted that Records of Jueyun refers to the star as “heavenly jade” in a later passage. The author then claims that people built “great cities and mighty fortresses” within the Chasm, “finding refuge and shutting themselves in with the leftover inheritance of that fallen star.” A good future research question might ask what exactly these people found refuge from, and whether these cities were built during the Archon War or afterward.
From left to right: Qingxu Pool, Lingju Pass, The Chasm, and Dunyu Ruins.
What is certain is that the Dunyu civilization is separate from Rex Lapis’s people in Liyue Harbor, with whom this civilization “maintained prosperous relations” over the millennia following the Archon War. Records of Jueyun refers to Dunyu’s ancient structures as “redoubts,” suggesting they had a defensive purpose. Again, defense from what exactly? This also appears to be the time when the mining industry was established in the region. The Chasm is not the only place where the mining industry boomed in Liyue - Mingyun Village and the Blackcliff Forge more recently also prospered with the Geo Archon’s dominion, with the Blackcliff Forge serving as both a forge for ore found in the Chasm, as well as a mining operation of its own right operating in Mt. Tianheng (More About Zhongli II). EDIT: Oh yeah also this kinda sorta huge thing happened once mining was established at the Chasm - after a long time, Azhdaha went berserk as the mining activity damaged the Ley Lines, which sustained him as a geovishap made of elemental crystal. With his mind already eroding, the mining that occurred between the end of the Archon War and the Cataclysm drove him to madness, and he began attacking Liyue. It took Morax and several adepti to subdue him, with their battle spilling out from the Chasm into western Liyue, eventually ending in Azhdaha’s sealing beneath the Dragon-Queller tree. This was a major loss for Morax, among one of the events that he attributes to his own erosion. Don’t know how I could have missed that one.
It was only upon the advent of the Cataclysm 500 years ago that prosperity broke down and the ancient city was sealed away by the Dunyu civilians. At this time, it is unclear if the upside-down city seen in the version 2.6 trailer is the city Dunyu sealed away. None who survived the Cataclysm will speak of what occurred at Dunyu.
…And that’s about it for the early history! The Cataclysm era is the real meat of the Chasm’s currently available history, and that will be covered in the next post. It will discuss the Han family, the Yun family (yes, as in Yun Jin), and the descent of yet another star into the mines. EDIT: As of Patch 2.6, this was a misunderstanding of Tenacity of the Millelith. The only meteorite that ever descended was this first one.
References
Records of Jueyun, Volume 6: Hidden Jade
Blackcliff Woes
Zhongli Voicelines
The Chasm
Genshin Wiki’s Timeline













