Quick Answer
The Library Chest in Mina the Hollower is inside Radiant Manor Foyer Library, the small room beside the large mirror. To reach it, break the right-hand hidden pillar near the bookcases, climb the ladder that appears, collect the upper book on the shelf, then cross to the chest for Bonestone Gem #1.
You do not need Wallower's Gauntlets, a later movement upgrade, or a second entrance. The whole solution is inside the same library room.
Radiant Manor Library Chest Location
The Radiant Manor Library Chest is in Radiant Manor Foyer Library, the small room beside the large manor mirror. Once you enter the room, look above the bookcases: the upper book and the Library Chest sit high on the shelf path.
This is not a late-game movement check. If you can see the chest but cannot reach it, the answer is the hidden ladder puzzle inside the same room, not Wallower's Gauntlets or another route through Radiant Manor.
How to Reveal the Hidden Ladder
The ladder is not visible when you first enter Radiant Manor Library. To reveal it, break the right-hand hidden pillar near the bookcases. The right-hand pillar blends into the background, so it is easy to miss even when you are standing in the correct room.
Break the right-hand hidden pillar in Radiant Manor Foyer Library to reveal the ladder.
After the pillar breaks, the hidden ladder appears on the left side of the room. Use the screenshot marker as your reference instead of relying only on left and right directions, because the camera angle and bookcase background can make the pillar hard to read.
After the pillar breaks, climb the ladder to reach the upper book and Library Chest.
Step-by-Step Route to the Library Chest
- Enter Radiant Manor Foyer.
- Go into the small library room beside the large mirror.
- Look for the right-hand hidden pillar near the bookcases.
- Break the pillar to reveal the hidden ladder.
- Climb the ladder.
- Pick up the upper book on the shelf.
- Cross the upper shelf path to the chest.
- Open the Library Chest to get Bonestone Gem #1.
The whole route stays inside Radiant Manor Foyer Library. You do not need to leave the library, loop through another manor path, or come back from a second entrance.
What Is Inside the Library Chest?
The Library Chest contains Bonestone Gem #1. If you see this written as Bonestone Gem 1, it is the same reward.
The Library Chest reward is Bonestone Gem #1.
For the resource system behind this pickup, see the Bonestone mechanics explanation in the mechanics guide.
Do You Need Wallower's Gauntlets or a Later Ability?
No. You do not need Wallower's Gauntlets, a double jump, a late-game movement upgrade, or any special shortcut. The puzzle is solved by breaking the hidden pillar in the same room.
This makes the chest worth checking while you are already exploring Radiant Manor Foyer instead of saving it for late-game cleanup.
If the Ladder Does Not Appear
- Make sure you are inside Radiant Manor Foyer Library.
- Attack the right-hand hidden pillar near the bookcases.
- Use the screenshot marker instead of relying only on left/right directions.
- Keep attacking until the pillar breaks.
- After the pillar breaks, look for the ladder on the left side of the room.
Do not look for a later upgrade or another entrance. If you are trying to reach the upper shelf path with movement tech, you are probably overthinking the Radiant Manor Library Chest puzzle.
Related Radiant Manor Guides
- Radiant Manor Foyer map - the entrance hub where the mirror and Radiant Manor Library Chest room are located
- Radiant Manor map - the full manor map for broader room cleanup; if you can see the upper chest in the library but cannot reach it, use this Mina the Hollower Library Chest guide
- Radiant Lionel boss guide - courtyard boss guide for Radiant Manor
- Furgus the Faithful boss guide - butler boss guide for deeper manor routing
- Beginner's Guide - core systems, Underlabs, Bonestone, and early routing help
- Mina the Hollower maps database - all available region and room maps
FAQ
Where is the Library Chest in Mina the Hollower?
The Library Chest is inside Radiant Manor Foyer Library, the small room beside the large mirror.
How do you open the Radiant Manor Library Chest?
Break the hidden pillar inside the library, climb the ladder that appears, collect the upper book, then cross the shelf path and open the chest.
Which pillar do you break for the Library Chest?
Break the right-hand hidden pillar near the bookcases in the Radiant Manor Foyer Library. Use the screenshot marker as your reference because the pillar blends into the background.
What is inside the Mina the Hollower Library Chest?
The Library Chest contains Bonestone Gem #1.
Why is the ladder not appearing in Radiant Manor Library?
The ladder only appears after breaking the correct hidden pillar. If it does not appear, you are probably attacking the wrong part of the room.
Do you need Wallower's Gauntlets to reach the Library Chest?
No. You do not need Wallower's Gauntlets or any later movement upgrade. The solution is to reveal the hidden ladder inside the same library room.
Is the upper book reached from the same route?
Yes. The same hidden ladder route leads to the upper book pickup and then across to the Library Chest.