Ever since the updates, Moria runs a lot more linearly. Now the questing goes: Great Delving, Silvertine Lodes, Durin's Way, Water-Works, Zelem-melek, Redhorn Lodes, Flaming Deeps, and Nud-melek. No regular quest sends you to the Foundation of Stone. It is now an optional area, and eventually the epic sends you there.
Because it is so linear, it is entirely possible that you haven't completed a prerequisite. If there are no NPCs that give quests (should be two of them on either side across from the stable), then that is my best guess.
A friend and I quested through all of Moria (except FoS and the epics) in the last 3-4 days. We followed the path that the quests sent us through. However, you may miss quests in Zelem-melek if you don't follow the appropriate order (as I said, it is pretty linear).
I don't think this is the case. I quested through just the other day and I don't remember ANY glow worms down there (with or without rings over their heads). In the very least it won't be a pre-req. In fact, the only glow worms I remember off the top of my head would be in the Water-works, Nud-melek or the Silvertine Lodes.
Originally Posted by ArgentMage
Also, be very wary of the wiki. A lot of quests were removed, moved, or altered. Look for Mogr or any NPCs in his vicinity. If that doesn't help, try to just continue questing from where you were before. You say you've done most of the Durin's Way quests -- try finishing them all. When you do, you will get a quest in Jazargund and that sends you to the 21st Hall. You'll get some quests at that point, including one that sends you to the Water-works.
R5 100 GRD Marevayave - Leader of Riddermarked For Death
R8 100 MNS Fayah/100 LM Siennah/100 HNT Dinenol/100 RK Dhurik
100 CHN Alachas/85 CPT Dinfaerien/60 BUR Dhax/35 WDN Godoric
R9 100 MNS Fayeh (alt Wilya) - Lonely Mountain Band @ Landroval