Lost City of Tinnos - Room with Shallow Pools and Second Uli Key (part 2)

Once you've cleared the room, head for the corner beyond the deep pool (i.e., to the left of the entrance when facing it).

You'll find the SECOND ULI KEY sitting on a shelf in the alcove there.

Then cross the room to the opposite corner.

This alcove contains a ladder.

Climb up and dismount on the left.

This short passageway contains a switch and a keyhole. Pull the switch to open the gate next to it. Just beyond the gate is the lower level of the room with the PILLAR OF LIGHT.

This short passageway contains a switch and a keyhole. Pull the switch to open the gate next to it. Just beyond the gate is the lower level of the room with the PILLAR OF LIGHT.

NOTE: You don't have to open this gate before going after secret #3, but it helps. If you don't care about obtaining the final secret, simply use the SECOND ULI KEY in the lock beside the gate. Then enter the room with the PILLAR OF LIGHT and place the FOUR OCEANIC MASKS in the receptacles around the light beam (assuming you haven't already done so). This deactivates the beam and opens a hole in the floor where it previously shone. Drop through and slide down the ramp to finish the level. Otherwise, continue following along to get the secret.

[Part 1 | Return to the Lost City of Tinnos Walkthrough]