TREASURE MAP 1/1
Coordinates: [712594; 3416259]
Note: The map you're looking for is located in the large chamber with movable cage, where you solve puzzle. Start at the entrance to the chamber, staying on the upper balcony and heading left. After approaching the left mechanism turn around and jump towards the ladder to get to upper balconies.
Start exploring the highest balconies, performing single jump along your way. The treasure map lies on the table at the very end and when you pick it up, you'll obtain information about locations of all missing secrets (reward: 25 XP).