I have reached a spot in the city where I walk up a fallen pillar out of the water facing a small half moon shaped pool with what seems to be a door facing me with a small block that looks like it should extend to make a bridge to the door. On either side there are stairs going up to a short corridor that has a lock that I use a glow stne on to open the door. Inside each room there is a lever that turns. When I turn the lever it does not do anything. I am assuming both levers should extend the small bridge. Could someone please give me some insight on how to extend the bridge.

thanks in advance.

You need to open both doors and turn both locks, meaning you have to have 2 glowstones in your inventory at this time. One lock extends the bridge, and the other opens the doorway in the wall it leads to.

HINT: if you don't have 2 glowstones, go back and remove some that you used in other locks. The one that you used to get into the revolving room from the entrance can be removed without a problem (west exit from room).

Hope this helps!

Sazerac