Where does the watchtower clue lead?
Align the looking glass with the fallen masts below, then return to Leni beside them and interact to uncover a trapdoor. This is the earlier ruins puzzle in Chapter 3, before the late mirror and platform rooms.
Find and align the looking glass
- Find the ruined house doorway that matches the journal’s sketch. Look through it toward the watchtower.
- Grapnel up to the tower’s platform and use the circular looking glass.
- Adjust the view until the fallen masts below form the journal’s X-shaped landmark.
Return to the marked location
Grapnel down, walk to the fallen masts, and meet Leni. Interact with her to uncover the trapdoor, then descend.
- Aligned the view but still on the tower? The remaining interaction is below, beside Leni.
- Collected a Resonance Point but found no entrance? The tower has a separate pickup; collecting it does not finish the puzzle.
- Facing movable light reflectors? Use the later Chapter 3 guide.
Sources and scope
The journal viewpoint and X alignment follow Marie Pritchard’s Eurogamer watchtower guide, using the existing research extract. The tower route, separate pickup, and Leni’s trapdoor interaction were cross-checked against Richard Seagrave’s GameSpew walkthrough, Chapter 3. No local gameplay reproduction was performed. Return to puzzles by location.