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“Beneath us is iron’s ancient bastion, Thor Modan. Thousands of years ago, the stone giants tore the land asunder, collapsing part of the city and exposing much of the rest. Even now, the iron dwarves attempt to reclaim their old capital, but we will not permit it. My giants fill the trench with boulders and debris, hoping to seal it off and kill the servants of iron as they work.
Take up the boulders you see near the trench to the northeast, and help us put an end to their efforts.”
-Kurun
Kurun on the hill overlooking Thor Modan wants you to disrupt the iron dwarves’ work by throwing boulders into the exposed area of Thor Modan.

You will be able to choose one of these rewards:
You will receive:
Upon completion of this quest you will gain:
Quest Giver: Kurun — Hilltop overlooking Thor Modan, Grizzly Hills [65.7, 17.7]
Objective: Disrupt 5 Iron Dwarf Operations by throwing Boulders into the exposed trench of Thor Modan.
Quick Facts
Walkthrough
Accept and Get Buffed
When you accept the quest from Kurun, he casts Gift of the Giants on you, doubling your character’s size and boosting stats by 30% for 10 minutes. The buff is cosmetic fun and a stat bonus, but it is NOT required to complete the quest. If it wears off, gets right-clicked away, or never lands on you (Kurun has notoriously bad aim and sometimes casts it on hunter pets, Highland Mustangs, or even himself), just keep going.
The buff disappears if you leave the Boulder Hills area. You cannot take it to Dalaran, Orgrimmar, or anywhere else. You can mount up while buffed.
Gather Boulders
Head northeast from Kurun to the Boulder Hills area. Glowing boulders are scattered on the ground between Kurun’s position and the trench. They have no cast time to pick up. You can carry up to 5 boulders at once, so gather a full stack before heading to the trench edge.
Good boulder locations: around [67, 12] and [70, 11]. The boulders at [70, 11] are especially efficient because they respawn quickly and are very close to the throwing spot.
Throw at Iron Dwarves
Walk to the edge of the trench where the friendly Grizzly Hills Giants are already hurling boulders and trees. Good throwing positions: [69, 14] or [70, 12].
Use the boulder from your inventory (or bind it to a hotkey for speed). An AoE targeting circle appears. Place it directly on a dwarf in the trench below. Valid targets are Rune Reavers and Iron Rune-Shapers. Iron Thane Argrum does NOT count. Aim for the dwarves that are actively mining or working, not the named boss.
Key mechanics:
Return to Kurun to turn in.
If You Fall Into the Trench
There is an exit on the southwestern side of the canyon. You can also throw boulders from inside the trench at ground level if you still have some. Druids with flight form: be careful flying over the trench edge. You are forced out of flight form when attempting to throw, which can dump you into the canyon.
Efficiency Tips
Lore Context
The stone giants destroyed Thor Modan’s upper structure “thousands of years ago,” collapsing the city roof and exposing its interior. The iron dwarves are now attempting to reclaim and rebuild it. The boulder bombardment is Kurun’s ongoing containment strategy, filling the trench with debris faster than the iron dwarves can clear it.
Kurun’s completion text admits the truth: the bombardment alone is not enough, setting up the next quest where you must enter the trench yourself.
The friendly giants already throwing boulders and trees alongside you are the Grizzly Hills Giants, part of Kurun’s army. They’ve been maintaining this siege for years. You’re joining their bombardment crew for a single day, doing what they do endlessly.
Explore Grizzly Hills’ hidden easter eggs, lore mysteries, and connections across Warcraft history in Vikstone’s Grizzly Hills Chronicles, along with the complete quest storyline.
Vikstone's War JournalFrom the ridge, I could see the exposed ruins of Thor Modan below. An ancient city, torn open thousands of years ago when the stone giants shattered the land itself.

“Beneath us is iron’s ancient bastion,” Kurun said. “Even now, the iron dwarves attempt to reclaim their old capital. We will not permit it.”
His strategy was simple: fill the trench with boulders and bury the iron dwarves as they worked. I heaved stone after stone, watching each one crash into the excavation below, scattering workers and crushing machinery.
But the iron dwarves were relentless. Almost as fast as we filled the trench, they cleared it.
I returned to Kurun.
“As quickly as we fill the trench, they keep clearing it. Our assault from above will not take the city alone.” Kurun looked toward the plaza below where earthen forces clashed with iron defenders. “You must aid them directly. The battle for Thor Modan will be won on the ground.”
The bombardment isn’t enough, and Kurun knows it. The earthen fighting below need someone to rally behind in Rallying the Troops.