Grimrock

The fire scroll (3rd Ancient papyrus scroll), is located in Hades. You've been through Hades as you got one of the two required Gold keys there, which brings you to the point you are at now. When you first enter Hades, to the North is a locked door, which says "Gateway to Hades". There are 3 pressure plates by here that are activated by an item. Activate all 3 to unlock the door. You come to a room with a talking statue, and a ladder that leads down into a fire corridor. Go north along the fire corridor, then turn west, go 4 spaces, then head north. Then turn west, and keep going west until you come to a ladder (just to the south). You will find a lever there. Activate it. Then head back down the ladder. Head east this time, and keep going east until you hit a wall. Turn north, then head east again when you can until you hit a wall. Then head south to another ladder. Climb it. This has the 2nd lever. Activate it. Both are needed to activate the teleport (up a ladder and around the corner from the first lever you set). Step on the teleport plate to go to the chamber with the fire scroll. Remember that you will suffer damage as you move through the fire corridor, so climb up any ladders you see to rest and recover. Some will have alcoves with items in them as well.

I checked that after the completion of the game through the console...