As Engelhart steps off the ladder, which we will say leads to hex 0708, here is what he sees:
Two of the pits that were glowing seem to be gone. There is too much shadow to see if the pits are there, but they are certainly not glowing if they are. There is one beetle stopped near the far wall. It is glowing, like they all have. It seems to be testing the air; it is making no special sign that it is aware of Engelhart.
There are three skeletons in the room, picked clean.
Engelhart will have to move away from the bottom of the ladder before anyone else can descend; I believe Pandred meant to come next.
Engelhart, can you confirm or not if you cast bless on the party before descending?