Both coords were right for me. 23.7 for Gan'Zulah 23.9 for Nezzliok.

Didn't have a problem as a 40 Paladin. Swam up to Gan'Zulah and only pulled him and one Witch Doctor. Nezz was a bit harder, 4 mobs plus him. Managed to do it though.

Remember that he spawns in front of the THRONE against the back wall of the temple's top floor. He is on a very, very long respawn timer, so pray someone else hasn't been there before you.
Went in as a Lv 37 War with a Lv 36 Mage. You can get to him pretty easily if you hop on the wall's edge and just run past the mobs. You won't aggro until you're near Nezz. After we killed him, we hopped off the top floor's west side down to the ground, and then made our escape along the coastline via the temple's western exit.

I almost missed the FOLLOWUP QUESTS for this.

After you put the heads in the cauldron, Kinweelay nearby says, ""Ah, good <name>. You may speak now speak (game typo) to the Bloodscalp chief and his witchdoctor.""

At this point, you will be able to speak to the Boiling Cauldron again, and get two new quests, ""Speaking with Nezzliok"", and ""Speaking with Gan'zula""

easy with lvl40 fury warrior.. just cleared so that I could run there on the walls and then waited for the spawns... had to wait for the other one a bit, killed about 40 trolls when waiting, and got many pages of green hills. :) Easy quest.

I soloed it on a 39 druid, but it was very trying. Basically, I stealthed up the back entrance, cleared a decent fighting area at the edge of the pool (literally, the rim of the pool, back a ways from the guy), and then single pulled the bulk of the adds. I rooted the add on Ganny's left, which somehow didn't cause the add on his right to aggro. Ganny came charging in, and became cat chow.

That was the fourth time or so that I tried. The first time someone ninjaed him out from under me, and then the respawn killed me. Second time I tried sneaking up behind him, which didn't work and I got aggro from both. Third time the root didn't hold long enough and the add got a Healing Ward off.

So yeah, it seems like Ganny and Nezzy are both linked to one add each, and pulling that add will get them without too much excessive aggro.

https://vanillawowdb.com/?npc=1061 Gan'zulah has a respawn timer of around 10-15 minutes in Patch 2.3.0. He's easily killed by a crowd control class and doesn't really do much damage to a level 41, as he's a 41 normal himself. He dropped https://vanillawowdb.com/?item=7472 Regal Boots of the Owl when I fought him.

You dont have to fight your way through the trolls to get to these bosses, and they are not difficult to fight as of 2.3.

At 26.10 you can jump from a hill onto the wall... follow the wall north til it dead-ends and there is a very small ledge running west... hop onto the ledge and carefully follow it... it ill run you smack dab into the two mobs without having to pull/fight your way through the entire mess of Zul'Kunda. You can use this ledge to get out as well. Good luck!

4600 exp as of patch 2.3

Both of the boss mobs are in the Inner courtyard of Zul'kunda ruins with the pool of water Loc 23,8

Easy way to get both leaders: (i know that thsi is long but it will save you trouble...if you dont catch agro on the way)

1. Go to the entrance of The ruins of Zul' Kunda (27,10) ish

2. Climb up a hill on the right side of the trail that leads into the ruins

3. Once on top of the hill there will be a wall, turn right intil you cant go any further

4. There is a small hill with a tree covering part of it, go on the hill and try to jump off onto the wall ( it just looks like a ledge from the angle you will be looking at)

5. Once on the wall go right until the ledge ends

6. Next you have to walk along a very small ledge that leads into a pool with water falling down some stairs (no, you cannot just walk up the stairs they are too big)

7. Go into the pool and keep moving until you see Gan' zulah with two other mobs, i pulled him with only one mob and he was easy enough to kill

8. turn around, go back to the stairs and on the left side there is anoher ledge, walk all the way around that ledge until you see a ramp that leads down

9. go across the path and resume walking on the ledge at the very end before the first turn is Nezzliok

10. come back the way you came

i was able to do it as a lvl 38 shaman but Gan'zulah was kinda hard because he hits kinda fast so if your a lower lvl and cant heal or fear or somthing i would wait till lvl 40

Gan'zulah dual wields and hits very fast/hard, as a 39 warrior in mostly greens in beserker stance he got me to about 20%, i had to pop last stand to live through his damage alone since the gaurds were already dead for some reason. nezzilok hits slower with his staff, but also hits hard. Not as hard as Gan'zulah though, got him when i was at 50%

Their both located at the most northern part of STV. You can climb over the hills to skip some pulls in the entrance

Gan'zulah's Head - Level 41spawns at 23,8 (Located right across from Nezzliok.)
Nezzliok's Head - level 40 spawns at 23,9 (Facing toawrds Gan'zulah)

They both spawn at the top. When you enter go straight until you start going down then hug the right wall and take the ramp up.
You should see a campfire and alot of mobs at the top.

Do i with:
https://vanillawowdb.com/?quest=596#comments:id=278417 Bloody Bone Necklaces & https://vanillawowdb.com/?quest=189 Bloodscalp ears(Booty Bay)

Another good way to get in if you're special like me and kept falling of the narrow ledge:

Head to the northwest corner of the temple via the beach. Kill the 2 guards at the archway, head up the path, kill the beast master and his cat, then climb the hills to your left (or north if you get turned around). You can then climb to the east, jump down on the wall, and you're right next to all the baddies you need to kill.

Remember that Nezzilok spawns around 3 times before Gan'zulah does if they are dead when you get there.

Soloable as a 37 resto druid.
Nezzliok is a straightforward fight and Gan'zulah's adds need to go down first.
He enrages around 35(?)% and can be pulled with only one add if you go from the pool side.

Completed as a level 40 Prot Paladin. I entered from the (north?) side of the camp, followed the wide path into the complex until I came to a ramp on my right, turned 360 to my right and went up the ramp. At the top of the ramp I did another 360 to my left and hugged the outside wall for as far as I could go, then turn 90 degrees right and the two mobs will be in front of you. Gan'zula is standing at the far end with a mob on each side of him. Nezzliok was actually standing 20 yards away with his back to me. Watch out for him, especially if you are a caster. I aggro'd him and he brought one mob with him and Nezzliok immediately hit me with some kind of lighting blast that drained every bit of my mana. I had to use a mana potion just to have enough mana to unleash a holy spell. After that he's pretty straight-forward melee and didn't take too long to go down.

Gan'zula is in the same area at the opposite end. You'll need to clear a few adds to get to him but I was able to pull them one at a time. Gan'zula has a mob on either side of him. I pulled the one on my left and he pulled Gan'zula with him. Basic melee, couple holy spells on him and he went down relatively easy. There is a second mob that is standing next to Gan'zula but he did not aggro during the fight, but I went over and killed him anyway, just for standing there and doing nothing while I slaughtered his Master ;o)

i only got 1850 xp, dont know if it was cause my level, i was 49

I am a lvl 36 hunter i was wondering if i could do this solo. I am pretty strong but i just want to know if i could do this without someone helping.

I managed it as a 36 Paladin, dinged 37 between the two. Had a couple of corpse runs, but it wasn't THAT bad.

Important - they are actually right in the same place, facing each other.
I didn't get that and after killing one went to look for the other at the other side of the ruins and wasted a lot of time.
They are in the same place.

I just solo'd this as a 36 hunter pretty easy go up the mountain kill all of the trolls around nezz except the two guards. Wait until he pats by the tree and pull (with pet on passive) u will get him and 1 caster. Sick ur pet on him and freeze trap caster ( he should run @ u with nez idk y b/c I'm pretty sure he is a caster but whatever) Kill nez then caster.Almost the same on Gan I pulled the left guard (when I was standing on the ledge to the left of nez) The guard and Gan will come running.Sick ur pet on Gan freeze the guard Kill Gan then the guard.Pretty simple when u look @ it well hopefully this helps some1 thx and ur welcome.

Go to the Zuuldaia ruins at {20.0 - 13.0}
Go North to {21.5 - 9.9}
Go up the ramp and turn right. go to the end of the way and turn left.
You'll see 2 ramps 1left heading up, and 1 right heading down. Take the Left ramp to go up.

Gan'Zulah is standing at {23.4 - 8.1}
with 2 witchdocters. right in front of them are standing 1 Berserker and 1 other witchdocter. you can pul them away before you go to Gan zulah himself.

Nezzliok is standing at {23.4 - 9.4} His got a single Witchdocter defending him. Easy kill.

managed this very easy as a lvl 39 warrior, gl :)

Gan'Zulah's body (and head) disappeared instantly after death while he was under Mind Control so priests be cearful about that.