1.1 Lever that opens the1.2gate.
1.2 The gate opened by the lever (1.1).
2 Secret - a switch that opens a room nearby.
3.1 Treasury with several safes.
To open them, you need a Golden Key.
If you don’t have any, you’re able to find it underwater (3.2).
Using one key, you’ve got the option to only open one safe.
3.2 Golden Key to the safes.
Two secrets are located inside.
The latter is a room with couple of safes(3.1).
Keys to them are lying underwater.
Also, watch out for two zarchtons patrolling the area because without a harpoon, you could’t fight underwater.
Although these enemies aren’t that strong, they can still pin you down to a wall.