O.k....This is what happened. I killed Naga.
Opened secret wall to maze area. Found room locked by a skull lock. entered elevator maze. Fell down chute encountered serpent master answered his questions, and he gave me a key. I flipped switch and the two elevators in this room started working. took the left or sout elevator up to a room with a skull switch and a black wall, and two elevators one of which I just used. Now does anyone else have a black wall. The only thing I can assume is that my game has a bug and I'm screwed, because I believe the should be a skull lock in here somewhere. I also can find nothing that this skull switch activates. can anyone confirm my bug or help me get the hell out of here before I break something. Thank you....

Alright, I had no probs using the key the master serpent gave me. I took the elev on the left, and it took me to the 4th room in the elev. maze...the one below the first chamber. IN that room there is a locked door, the masters key opens that door. Make sure you use spirit eye to look for the key hole. The door that the key opens takes you to a small passage way with stairs, then back to the naga room. U want to go up the stairs, and you will find a large elev...I will let u figure out the rest. Shouldnt be a prob.
Hope this helps, I had to put a marker on every elev in the 4 rooms, finally found the trap door room last heh. By then I had the door that needs a key I do not have marked and easy to get to. Oh well. Good luck!
Willy1