sorry for not updating this earlier. I will head in now and grab the info you need. The floor is stone blocks.
EDIT: ok..in the zone now. Floor is grayish greenish blocks...like moss covered stone.
Initial zone in loc is -.024, -1.04, -41.48 There are several rats at this location walking around.
First POI is -0.96, -1.04, -13.20 At this location are 3 slabs on each side of the hall(total of 6). Right clicking on the slab give you the option to either defile the remains or whisper a prayer. defiling the remains spawns a single "Dessicated Remains" on top of the slab. The remains are lvel 17 double up arrow group mobs. Rats here also
See second POI for results of whispering prayers.
Second POI is -27.68, -1.04, +7.06. At this location are 2 things.
1) An exit to Vermin's Snye.
2) After praying over each set of remains a named ghost spawned here. I forget his name but I am fairly sure its the guy whos coffin you click on to zone into this instance. He gave me a few lines of dialog and thanked me for praying over the remains. He then gave me a halfway decent Idol. It's for sale in my room at the moment so I will have to come back later with the stats.
Spiders are at this end of the room.
Mobs in this zone are:
1) Previously mentioned remains if you choose to spawn them.
2) Grave Watchers level 17 heroic group mobs(spider). 2 groups of 4
3) Carrion Eater level 14 solo mob (Rat)
Last accessed file as requested is: qey_catacomb02+qey_catacomb_epic02.iop
If you need any further info let me know.
EDIT OF THE EDIT:
Forgot something. The first time I zoned in I was immediately attacked by the group listed below.
Ronicus the Red level 21 Heroic
Rustam the Vile 21 Heroic
3 Crypt Robbers 21 Heroic
This time i was in here a good 10 minutes before they spawned on top of me. They immediately started attacking even though they are grey to me at 26. They dropped nothing for me but I assume they would have had I been lower level.
EDIT OF THE EDIT OF THE EDIT
Ok..new info. It's not the whispering of the prayers that spawns the ghost (his name is Lord Tonmerk btw) its the killing of the crypt robbers.
He just spawned after I finished off thelast one. He is a 22 double up arrow group mob. The only option I have this time is to attack him. I assume thats because I defiled a remains earlier so that I could add the results to this post.
Killed him and he dropped a spectral essence and a chest which contained:
Idol of the Wretched
+5 Wis, +4 Int, +15 Health and +18 power
Requires symbol 90 and is Attunable.
This is the same idol I received for praying over the slabs so this might be farmable.