The main work, the book "Myths of Naul", mentions many magical places and objects. You can read about some of them below.
To explain: after Ükos's death (he was the author of the book Myths), his disciples searched for more knowledge and facts and wrote them down in other books. That is why the name of the author also appears by individual Wonderfulnes. There is also a reference to a specific paragraph in the book where Ükos mentions the matter.
For a better understanding of the terms and names, I also recommend reading the chapters of the book "Myths of Naul".
Wonderfulness 101
Did you know that...
... there were four artifacts placed on the head of the father of dragons?
67.4
The neck was as long as the tail, studded with thorns and hooks. He had a hundred horns perched on the hideous head, but the four horns were strange — he had a lot of magic hidden in them. And the names of the horns were Hyun, Pilk, Klof, and Ghazda. The horns then had such power that Holkron resisted the wizards' spells and found protection among the gods.
Brother Gutogut wrote:
This much is certain that Holkron now has on his monstrous head, gods forbid his calmness, only one of the original four horns, and eyewitnesses say that it is Klof. Namely, he took away the other three himself, and gave them as a powerful weapon to his comrades in the great war for Sïrdi's Oddland, known as Sïrdin'akwantori. What happened to them after the final battle is not known exactly, although they did not belong to any of the blessed eleven deities. However, one of the horns was seen in the use of the Dark Lord Wolosur, who only held it for a short time and soon handed it over to his unholy hero to use to torment the surrounding regions, namely Asasirk and Putäfonë. So that should be the horn Hyun.
And what is the power of those horns? I have not seen any of them myself, nor have I been able to speak to anyone whose trustworthiness is above all doubt. However, it seems that Hyun is the bearer of Yoltaen power, and certainly not ordinary, but its essence - because it comes from the Yoltaen Source and its essence allows to create completely new spells.
Master Ükos also mentions the fact that Holkron "found protection from the gods", presumably referring to the power of the Pilk horn. The latter hides the power of Ivarinden, and it can certainly affect the very Tildo. We can only imagine the extent of this power and its effects. However, one effect of the Pilk horn is known, and it is the ability to hide completely from the eyes of Tildo, especially from the eyes of the great Hidrandë, glory to him without limits.
The the Ghazda horn is lost or well hidden. Its wearer could then control the spells of all twelve elements. However, the power of the Klof horn is different - and well proven. Thanks to this magical object, the Father of Dragons can control the magic of the Outer World - and also escape into it, or dwell in it. It's not a secret after all.
It is now to be hoped that Holkron's horns, all four of them, will be obtained for protective purposes, into the hands of just and prudent creatures.