On this page of the Call of the Sea guide, you will find the walkthrough for opening the passage puzzle in Chapter 3 - The Vanishing of the lady Shannon. We described how to properly arrange the symbols to open the next passage.
To solve this puzzle, you need to get the symbols - for this, you need to solve the Floating stones puzzle.
Let's start with the first clue. You have to arrange correctly the floting stones in the shipwreck. We described this puzzle on a separate page of our guide.
Another clue is the projector. You have to click on the slide that Norah will pay attention to.
Please note that to turn the projector on, you'll need electricity.
A walkthrough for this puzzle can be found on the Electricity page.
Let's keep going. Now you need to press all the keys on the device lying on the tabletop That way, Norah will take more of the important notes.
At this point, you can get an achievement!
When you play the melody from the music box, you will get an achievement - You looked that up in a guide!.
Arranging the symbols
Having all the clues, the rest will be easy. We marked it all with colors to make it as clear as possible.
When you get the three right symbols, you have to go to the top and use them.
Correct symbols should be placed on the upper parts, incorrect ones on the lower parts.
You can rearrange the symbols in any order, as long as the correct ones are at the top. The first symbols you will find going down the stairs, towards the water.
The second one is located to the left of the mysterious passage.
Third is to the right, on one of the pillars.
In the end, you have to close the hole in the ground - you will do it by clicking on the rock standing in front of the circle.
After you have done all these steps, you need to flip the hatch and click the available button. This will open the passage.