The trio (with someone uncomfortably hefting an extra loaded backpack) moves inside the sphere of permanent light. Unnoticed before in dimmer lights, the floor glistens with the thinnest dampness of water. More than sweating stone but less than a spill or flow.

He doesn't think so.

Narrhil crawls through into the low domed chamber. The air remains cold, no noticeable shift in temperature here. All is quiet save his companions squeezing in behind him.

Nothing seems different here, but now in this light, you can see that the stone floor is slightly ridged, as if were cut from a single piece of rock by a huge implement. 

The shriveled body pulled to the 6ft by 3ft depression (about 8 inches deep) in the stone floor on the far opposite of the secret chute opening.

The 6 green bottles remain in the center where the body was before NArrhil dragged it away, but in this light some dried blood markings can be noted now on the floor there.

A burned out torch from earlier near the entrance. Several of the hastily piled bottles rolled inside the chamber from when the shelves where unpacked for wood.
 

Caveman wrote:

Due to urgency, Narrhil goes to examine the secret chute entrance first.

Once Tillak and Keet are through, Narrhil returns to the secret chute opening. On the floor is a discarded  torch butt and 4 stoppered glass bottles that have rolled into the chamber from the pile in the cellar.

The robes yield nothing. The dean priests skin is dried from the inside out. You can see he once worn the ring that is on your finger under the blue stain.
The depression is 8" deep. A rectangular space. 
Tillak remembers it to be the space from where he emerged from the mountain cave with the mining cart and says so.
The only markings are the floor, made with the blood. 

[The secret tunnel chute is 2'x2'x5' long running between the domed chamber and the far corner of the cellar.]