Engelhart, covered by the spell sanctuary, begins to make his way down the stairs. It takes him 3 action points to get to the bottom. He is able to advance two more along the left wall. Here is what he sees:
Basically, nothing - though there is the dimmest, most subtle suggestion that there is something out ahead of him. Perhaps it is that some of the blackness out there may be a little more reflective than the rest of the blackness.
Therefore, following his described action, he edges forward from here during the 2nd round of his sanctuary spell. Moving forward two hexes (2 AP), he sees:
On the left, some sort of grey-brown figure, about six and a half feet tall. On the right, what appears to be the edge of a well, with a very crude windlass atop it, only two feet above the well. As you wait the remaining AP of your second round, you discern that the figure is completely motionless.
In two rounds, your sanctuary will run out.
Engelhart moves to 0812, giving him this slightly improved evidence: