After much hair pulling and mob killing I found it. Uploading a picture and posting the loc for those, like me, working on the hunter achievement: /Loc = 785, -740, -110
From March 8, 2013 to March 17, 2013 Rare Mobs and Faction Gains/Losses will be dramatically increased. Grind faction and get loot! Cleared out spawns from bottom of the spiral stairs including the wandering mobs all the way to the room where Yoz'an the Ritualist spawns 6 times and still haven't seen any named besides Yoz'an the Ritualist which spawned once. Knowing SOE they didn't actually activate this supposed dramatic increase in rare mob spawns at least as of my post time. EDIT: 2 clearings after my post he spawned. He dropped Spiral Earpin.
Colodor is right. to make it simple. if you were heading to tree camp, as soon as you hit the bottom of spiral theres a small hallway to a door. this is glithos spawn room. look at the mobs, theres 2 guarding door, and 2 guarding entryway connecting spiral staircase, then 2 on both sides. both spawns are the left side ones (Northwest as he put it)
Concur - As you stand on the top of the ramp over looking the room with 8 mobs and 2 roamers, he spawned for me as the 3rd on the left, just as indicated (Loc. 812 x - 660 x -108). He appears significantly smaller that the others.
Found this guy after a patch in the room just at the bottom of the spiraling ramp. So decided to camp in the North West corner of the room beside the ramp (tough camp spot, need to position mobs just right or you get adds). In about 5 hours of camping I seen Glithos spawn 5 times. There are 3 a myrmidon of granite on the north west wall, 2 more guarding the door to the North East, and 3 more on the South East Wall. I have only seen him spawn off 2 of the 3 on the North West Wall.
Confirmed.....it popped off the right side door mob. Dropped caster ear unfortunately i was farming the charm for me shammy. Took about three hours of camping. we just sat up on the ramp and killed .....2 raomers come through here....one spawns past the door and one from up above....time those (14.5 min spawn)and go off of that so u dont get crushed.
12 hrs straight after server reset today and 15 hrs yesterday, not one spawn. Killed every golem on this floor to be sure, nothing.. Rediculous zone to farm for essences or whatever your after. I would advise Tosk for T4 essences. This zone looks cool and not very laggy, but a joke for spawns. The named tree spawned 4 times in 12 hrs and dropped the range POS every time. Bad luck for one day? Sure, 2 days back to back for 12 + hrs? LOLZ... I'm done here.. Permanently... Not to mention the long freakin run here thru the see-invis only to be disappointed.
blame the RNG ( random number generator ). RNG game design is a lame copout. RNG is a legacy of paper and pencil RPGs, when your using an RNG, your not playing a game, your pretending to play a game; simulated game play. ( i could rant more about what this means, but I doubt anyone cares. )
Just my opinion.
I got 2 rathe archivists in one half hour; one ess and 2 rogue rings. Sometimes the RNG will rain on wet ground, and sometimes its mercilessly barren.
The room NE from Archivist is Yoz'an's room. I camped it for 8 hours and got nothing but Yoz'an and the Librarian (from the 3 pathers. Has anyone actually seen Glithos lately? Does Glithos and the Librarian really share the same PHs?