Super-duper guide.
Here's the best map of Phomiuna Aqueducts currently online:
http://www.benri.gotohp.com/MAP-Phomiuna.htm
It's in Japanese, so I'll translate what I can.
The Entrance is on the bottom map, where you see the little red Kanji characters (for some stupid reason Allakhazam's form isn't letting me type in japanese. -_-;).
Green bars are ladders.
Red bars are doors that require keys or theives tools to open.
Blue bars are doors that can only be opened by pulling on levers hidden inside the room.
The little legend in the lower-right is an explanation of which lamps to light to propery open the door on the first map, and simply repeats what is already in your guide.
Edited, Wed Jan 5 20:45:38 2005 by Cesium