In the depths of the Dilapidated Castle - an underground location Fontaine, which appeared in Genshin Impact With patch 4.6 - there are many interesting puzzles. For example, when exploring the ruins under Petrichor you can stumble across chaotically floating Lost Grimoires, as well as Mysterious Shelves - magical openings in bookshelves that block the passage to treasures and hydroculam.
In this guide we will tell you where all the grimoires are located and how to catch them. After finding the floating books, we will show you how to get to all the Mysterious Shelves and go through them to the rewards.
How to catch and use lost grimoires in Genshin Impact
Elusive magical books are located in different parts of the Dilapidated Castle, located southeast of Fontaine, under the island of Petrichor. You can get here during the mission " The Shadow Over Petrichor ", part of a large cycle of story assignments " Canticles of Harmony "
You might have come across flying ghost books that periodically disappear and appear within a radius of a specific location. They can be collected if you use the special “symphony” skill (“T” → activation of the ability on “E”): come closer to the place where the manuscript is flying and make short press skill – it will freeze in place and become available for collection.
When you first catch any flying book, you will receive the achievement “ I Ask of Thee, Art Thou Mankind? "
Using Mystery Shelves
Magical grimoires are needed to gain access to treasure rooms hidden behind the Mysterious Shelves. These wall openings, blocked by a barrier of magical books, are also found in the Dilapidated Castle area. You don't need to look for a specific grimoire for a specific opening - all manuscripts are standard and fit any barrier. To open the passage, go to the shelf and Select the material you have, and in the additional window confirm the use of the grimoire.
Then use the “symphony” skill, but already long press – the books and the Hurdle will temporarily scatter to the sides, clearing the way forward. If you let go of the ability, everything will return to its place.
Map of the location of all lost grimoires
On the map dilapidated castle can be found 8 grimoires : Most of them are on the lower and middle levels, and only one is in the Pavilion, near the arena with Golem Legate.
Flying Book 1
From the teleport in the western half of the dungeon, run straight up the flight of stairs, and then up the left side: a book flies right in front of one of the mysterious shelves.
Flying Book 2
Go back to the stairs from which you turned to the first book and go down towards the Pavilion. One of the books is visible at the foot of the stairs, but when approached, it will disappear, leaving behind mini test with tags – follow the beacons up the right side until a rich chest appears in front of you.
To the left of the reward, on the opposite side of the cave, there will be a small ledge with another grimoire.
Flying Book 3
Move to the teleport in the north and go south to a spacious hall: another book flies at the exit.
Flying Book 4
Not far from the last find there is a staircase leading to two flights separated by water: go down the southern one and catch another magical manuscript.
Flying book 5
Another disappearing book flies near a pond located opposite the scene with teleport to Remuria And music bubble catching game.
Flying Book 6
Let's go get the remaining books to the library in the south of the Dilapidated Castle : return to the place where you caught the 3rd grimoire and run straight until you reach the desired room (map in 2nd screenshot above).
In front of the entrance there are books and several chairs, and a grimoire floats above them.
Flying Book 7
We rise to the level with the blue switch and go to the opposite side to the passage through the blue Hurdle of books. The manuscript flies a little further away, in front of the magic shelf.
Flying Book 8
Now go back to blue activator crystal – the path upward will begin from here. Hit the switch, and then stand on one of the hydro steps that appears ahead before the cliff.
The tiles will slowly fly upward, periodically disappearing to be replaced by new ones. Try to jump from the stopping place to the next step in time, gradually rising to the path of similar structures. From there, run left to the second activator crystal and hit it. A teleporting hydro-gun will appear nearby, along which you can climb to the end point of the path.
At the very top, near the mysterious shelf, the last book flies.
Map of the location of all the mystery shelves
In Dilapidated castle also posted 8 mysterious shelves (one for each grimoire found).
Enchanted Passage 1
The first passage is in front of the location 8th book. A precious casket awaits you inside and Hydroculus.
Enchanted Passage 2
The next one is opposite 7th grimoire found. Inside there will be only a rich chest.
Enchanted Passage 3
Another cache is located on the stairs in the southern half of the library, between the 6th and 7th floors flying manuscripts.
Enchanted Passage 4
On the same floor as 6th Grimoire, there is another magic door. It is located in the northern half of the high room.
Inside, in front of the entrance, there is an amazing casket (with the decor “ Mallow Wood Mailbox: Storage "). On the right there is a staircase leading to hidden room . If you defeat three stones here Praetorians, you will also receive a precious chest. Plus, in the southern part of the cache you can find an altar with a stone sword - this black blank for two hands.
Enchanted Passage 5
Travel to the northwest teleporter and run east to an area filled with floating books. On one side of the corridor in this area there is another shelf.
Go deeper and fight the stone knight guarding the precious treasury.
Enchanted Passage 6
This passage is located near the place with the 1st grimoire, inside there is a rich casket and Hydroculus.
Enchanted Passage 7
The penultimate shelf stands opposite the place where it was caught 4th flying manuscript (west of the scene with the painting leading to Sea of antiquity ). A rich chest is hidden here.
Enchanted Passage 8
The path to the last enchanted opening is through a staircase standing directly above the room with the 7th cache. Run up all the way until you find a shelf.
We use the last grimoire and get the achievement “ For the Loved by Books " Inside the cache there is an aggressive stone knight and an amazing Realm Depot (it contains the decor “ Long Mallow Wood Chair: Carved Memories ").
Achievements “For the Loved by Books” and “I Ask of Thee, Art Thou Mankind?”»
During all the searches we will be given two achievements:
- “I Ask of Thee, Art Thou Mankind?» – for the first capture of a book;
- “For the Loved by Books” - for opening the last mysterious shelf.
Both will bring a total of 10 Primogems. All chests encountered while opening shelves and capturing grimoires can be looted 65 primogems and 2 hydrocula.
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