This is a question that was asked on the discord (go join it if you have questions and need help!). Thanks to hiddenn for finding the solution, we explain everything to you!
If you have any questions about the game, come ask them and discuss the game on our discord server:
Unlock a hidden cave to find the last Hogwarts Valley Collector's Chest
To find the last chest, you must:
"It's good I found it, you have to advance in Poppy's quests to unlock a new cave"
This is a quest found in the side quests. Once unlocked you can open the last missing chest.
If you need help you can use the Hogwarts Legacy interactive map right here.
If you have any questions about the game, come ask them and discuss the game on our discord server:
