The group makes their way back to the main chamber one at a time. When everyone is ready the four larger men turn the sarcophagus while the gnome watches the floor in the green alcove.
With an audible click the sarcophagus stops to point directly at the hanging lantern. Then a tube starts to rise...
... it only gets a few feet before it stops and the ground starts to vibrate. In seconds the vibrations become rumbling and the tube starts to jerk downward. Something "let's go" and the whole tube tumbles out of sight downward to crash on the floor below. Dust shots up out of the newly formed hole as the group looks on in wonder.
Korr lets a chickle out after watching the platform fall. "I'm not quite sure, but I don't think that wasn't supposed to happen." Korr looks back to the group with a slightly puzzled look on his face. "I guess we'll have to climb down."