You must have missed a lift, recheck your map.
There are three lifts that don't work. Eventually you will find a switch, it activates one of the dead lifts, follow it until you fall down a slope and find the Serpent Master, get his key and activate the two remaining lifts with a lever in that room, the key will get you into the treasury you passed near the naga (get the Tome of Fire here), it will also open the locked door to some steps that will (eventually) lead back to the main temple, get the masque of evil on the way. The gate between the naga's room and the back door doesn't open - forget it.
|