Earmy easily sees that there are two seperate rooms, the study/bedroom in the north-east, where the wizard came from, and which has two doors; and the room with the strange noises in the south-east, which has one door and the strange pipeline coming out of its wall.
On the other side of the level, there is the room with the stairway, which they used to get here, and the small guard room, where the oversized lizardman emerged from.
Other than that, and a lot of pipes, vents and wheels, as well as the obvious pipeline, through which the black stuff is pumped through the top of the pyramid, there is nothing around.