Dantes:
Seeing the torch fall, and fall, and fall it becomes clear that pit is a dead end, at least for now.
ooc - Can you please refresh my memory on what passageways/exits are here?
With nothing immediately coming to light in terms of additional passage ways obvious or secret, and the pit appearing to be bottomless, Barghujin will say
"Surface again to. Lab door to Mage Tower open maybe, as Troll dead"
She will then retrace her steps back to the entry chamber. Hopefully the archway/doors that were glowing with the green light will no longer be doing so.