Dragonspine Lore

Dragonspine lore

Just gathering all this in one place, for my reference.

Information about the Frostbearing Tree, from the Frostbearer catalyst:

When the daughter of the priestess of Vindagnyr was born beneath this white tree, the king in the verdant mountain was filled with joy when she received her blessings. Surely, the blessing of Sal Vindagnyr would be everlasting, just as the undying silver-white tree whose roots pierced the earth.

When the nail that froze the world descended suddenly, and that tree, too, would be shattered by it, that girl took the most complete branch, thinking to breathe new life into the tree that once overshadowed a nation.

But in the end, the grafted life could not flourish. The cutting snowstorm eventually covered the moonlight like a curtain of countless blades...

A long, long time later, yet still long ago - when the deathmatch between the dragons of darkness and wind was decided at last, when corrosive blood stained the ashen valley red, the tree, at last, remembered that it had not died with that entombed city,

And it extended its greedy roots towards the warm ichor that irrigated the land. And as a certain someone poured a crimson essence upon it, the tree that should have long died remembered its past, and bore a single fruit from the gathering of all its might...

Here for those who dwelt in my safe shadow, for the priests who eulogized me, for that lovely maiden who oft painted upon my form, for all the happiness they could not possess - I enjoin them all into this crimson, icy fruit.

To the ones who can render recompense upon this poisonous world shall it go, and may they carry my innocent, bitter fruit as they enact justice.

To summarize: Long before Durin, the Dragonspine was called Sal Vindagnyr. It was a prosperous, verdant kingdom that worshipped a Leyline tree. However, one day the Skyfrost Nail fell from the sky, breaking the tree and engulfing the mountain in perpetual ice. The last princess of the kingdom had preserved a single branch from the tree, which lay dormant until the mountain was tainted by Durin's blood. Absorbing the tainted blood, the former silver Leyline branch sprouted into a crimson Frostbearing Tree...

The Ancient Writings on the tablets:

"...its soul, and Starsilver its bones. But the one who could wield it, the ice-breaking outlander, Imunlau[kr]..."

"...attempted to heal the Leylines, but the tree had already withered. After burying the princess..."

"...without result or reply, Varuch proceeded on to the summit..."

"...snow whipped across the skies. The pillar that fell from the heavens was riven in three..."

"...far from snow and strife, and came upon this verdant paradise. A monument was laid down in this place, and it was named Sal Vind[agnyr]..."

"...dreamed of the black dragon that blotted down the sun, and knew it to be an omen of doom. That same month, the outlander..."

"...guided to where the pale white tree stood. That month, the underground waterway..."

"...ended. There is no more need for records. Yet I regret nothing more than having been unable to watch her finish the fresco within that great hall..."

To summarize: The people of Sal Vindagnyr tried to stop the perpetual snowstorm. However, only an Imunlaukr outlander named Varuch [I think] was able to wield the Starsilver weapon needed for this. He was too late, though he did split the Skyfrost Nail in three, which is how we find it.

From Snow-Tombed Starsilver, the greatsword in question:

Tainted black blood dripped from the blade of his greatsword, as he trudged through now-foreign snowy paths.

But when he returned to the great hall of that mountain country, naught but ringing deathly echoes welcomed him.

"So even here, there is nothing left for me to protect... You who dwell in the heavens, you must wish for naught but to watch our ashen suffering here below. In that case, then let me help you pass the time with a song of iron and blood."

The outlander left the Starsilver originally meant to shatter snow and wind alike between the frescoes. Then, he descended the mountain to search for a land full of war and strife - a place he might paint red with blood.

Note that the Imunlaukr clan is also mentioned in the Sacrificial Greatsword description. They were a clan that sought battle in the belief that it would amuse the gods and joined the new Mondstadt that Venti created after Andrius melted the ice across the region. Interesting point: This is also the description that says, "On the cliff facing the eastern sea, the ancestors worshiped the masters of Time and Anemo together." It also again brings up "brave warriors stained black with blood."

Purely speculating, Sal Vindagnyr was probably BEFORE the rebellion in Old Mondstadt (they are mentioned fleeing "snow and strife" to settle in Vindagnyr, which sounds like Mondstadt pre-Andrius unfreezing it and the Archon Wars, respectively). So the clan perhaps picked up these traditions of "fight for Celestia's amusement" from this specific dude after he left Dragonspine.

There's also this image of the inner chamber and the frescoes that the princess had been painting, which I saved from a tweet that doesn't seem to exist anymore (not mine):

Completely irrelevant small point: The eight letters outside the great hall which you have to make light up spell "veremini," which wiktionary tells me is second-person plural present active indicative or imperative of "vereor," which means "to revere" or "to dread."

Aside from this, there is a series of Ruin Guard remains which spell out, "For the nation, we can't forgo this skyborne power, but we failed."

Most of this isn't particularly relevant to the main storyline, but there are two points that link back to the ongoing themes:

Even though this was before the Cataclysm, Gold, and Durin, the Imunlaukr fought something with "tainted black blood," so the whole business with tainting is OLD. Gold wasn't the origin as such, they just used it. The Imunlaukr particularly thought that going the Abyss (assumed) might have some answers re: the Skyfrost Nail.

Both the Frostbearing Tree and the Imunlaukr consider what happened to Sal Vindagnyr to be unjust, and Celestia's fault. Now, this might be just their bitterness at what feels like meaningless suffering, but it could also be that the Skyfrost Nail didn't fall on them accidentally. (AKA Khaenri'ah was not the first or only case of human nations getting slapped down by the divine.)