The walls of room 7/6 are fit with shiny brass. The air is hot, almost unbearably so. Along the south wall is a dais with a large, cut orange crystal hovering above it. Flames leak from the crystal like tendrils, moving across the floor for a few feet before evaporating. Touching the crystal severely burns the adventurer.
In the middle of the room is a strange device - a box with knobs, a metal loop sticking out of one end horizontally, and a metal antenna sticking out the other end vertically. A theremin! Playing it reveals the air around it is super-heated, causing damage to the musician. If the correct tune is played on it, a flame portal opens around the crystal.