The room continues turning counterclockwise, and Lukas encounters yet another harmful beam, this one about waist high. At this point, the room drops another 5 feet on a diagonal downturn. As it does so, you are realizing that new beams of light must be pouring in from the side walls as you drop because they do not seem to discontinue as the floor drops. (In other words, even though the floor is lowering, there is no "ceiling" of lights, so new lights must come through the darkness as the floor descends to their level.) That, or the beams above are pointing more down the further you drop.
So here is the updated map with what you discovered. The "height" of the harmful beams might be different, or there may be more harmful beams now that the room has descended a total of 10 feet and rotated about halfway.
The party, except Lukas, is slowly rotating around next to the pedestal. Lukas is between the two beams in the upper northeastern corner.
Shapfren has the golden box and Tahldar has both gems.
This message was last edited by the GM at 22:31, Mon 03 Nov 2014.