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“The cavern that we opened at Baelgun’s was the one place that most steered clear of… can’t say I blame ’em. The sound of thunder shot out of that cave, ! Loud, booming thunder! I think near the end, it was abandoned by all. Bad, bad things happened to any that went in to explore – most never coming back.
I want you to check that cave out while you’re at Baelgun’s. Explore around the titan statue inside and report back with your findings.”
-Walt
Walt at the Explorers’ League Outpost in the Howling Fjord wants you to use the Iron Rune Construct to explore the thundering cave at Baelgun’s Excavation Site. Dismiss your construct by dismissing it from the pet window once you have completed the quest.

You will be able to choose one of these rewards:
You will also receive:
Upon completion of this quest you will gain:
Quest Giver: Walt at Explorers’ League Outpost
Objective: Use the Iron Rune Construct to explore the thundering cave at Baelgun’s Excavation Site and witness the event inside.
Quick Facts
Walkthrough
Recommended Route to the Cave:
Alternative Route:
Critical: Completion Requirements
The quest does NOT complete just by entering the cave. You must:
If you leave early, you won’t get credit.
Tips
Loken’s Speech (Full Transcript)
Loken yells: Come, minions! Your master calls!
Loken yells: The work of your brothers in the Storm Peaks has reached a frenzied pace. Soon, Father will be freed.
Loken yells: Your brothers to the north have subjugated the stone behemoths and set them on the path to Ulduar. Soon, the remaining defenses of the Pantheon will be neutralized.
Loken yells: The three fissures opened by the mortals of this region must be silenced. The earth hears and sees what we do and will continue to interfere with our efforts if the way is not closed.
Loken yells: Bury this place! Your master demands it!
The sound of thunder dissipates.
Lore Context: Who is Loken?
This moment is your first encounter with one of WotLK’s central villains. Loken was once a titanic keeper, one of the powerful watchers assigned by the Pantheon to guard Azeroth and keep the Old God Yogg-Saron imprisoned within Ulduar. But Yogg-Saron’s whispers eventually corrupted him.
What began as an accident (Loken killed his brother Thorim’s wife Sif) spiraled into desperate cover-ups. To hide his crimes, Loken incapacitated or corrupted the other keepers, seized the title of Prime Designate, took control of Ulduar, and became Yogg-Saron’s unwitting pawn. The iron dwarves you’re fighting throughout Howling Fjord? Loken created them using the corrupted Forge of Wills.
His speech reveals several critical plot threads:
Walt’s reaction upon your return is equally significant: “What could those iron menaces be up to? What are they doing in the Storm Peaks? And what is this Loken!?” The Explorers’ League has just learned that something far more dangerous than the Lich King is stirring in Northrend.
Cross-Expansion Connection: The Road to Ulduar
This quest plants seeds for the Ulduar raid in patch 3.1. Loken serves as the final boss of the Halls of Lightning dungeon, where his death triggers the “Algalon failsafe.” As Prime Designate, Loken’s death automatically summons Algalon the Observer to judge whether Azeroth should be destroyed and “re-originated.”
His final words prove prophetic: “My death… heralds the end of this world.”
Easter Egg: Pink Floyd Reference
The quest title references Delicate Sound of Thunder, a 1988 live album by Pink Floyd released during their A Momentary Lapse of Reason tour. That album title itself references Ray Bradbury’s classic 1952 science fiction short story “A Sound of Thunder,” about the catastrophic consequences of small changes to the past.
Walt describes how “the sound of thunder shot out of that cave” and frightened away all the explorers. Loken’s transmissions, powered by titan technology, boom like thunder through the cavern.
Explore Howling Fjord’s hidden easter eggs, lore mysteries, and connections across Warcraft history in Vikstone’s Howling Fjord Chronicles, along with the complete quest storyline.
Vikstone's War JournalWalt stopped bouncing when I told him what the projection had said.

“The cavern that we opened at Baelgun’s was the one place that most steered clear of. Can’t say I blame ’em. The sound of thunder shot out of that cave! Loud, booming thunder!” He shook his head. “Bad, bad things happened to any that went in to explore. Most never came back. I want you to check that cave out while you’re at Baelgun’s. Explore around the titan statue inside and report back with your findings.”
The construct gave me cover where flesh and blood explorers had vanished.
Inside the cavern, thunder rolled through stone corridors. Then, near a massive titan statue, the air split with power and a projection blazed to life.
A figure of terrible authority. “Come, minions! Your master calls!”
The iron dwarves gathered below, silent and waiting.
“The work of your brothers in the Storm Peaks has reached a frenzied pace. Soon, Father will be freed.”
Father. Something older than this Loken. Something imprisoned.
“Your brothers to the north have subjugated the stone behemoths and set them on the path to Ulduar. Soon, the remaining defenses of the Pantheon will be neutralized.”
The Pantheon… the titans themselves.
“The three fissures opened by the mortals of this region must be silenced. Bury this place! Your master demands it!”
The projection faded and the thunder died.
I understood now why the iron dwarves buried everything. They wanted to hide their master’s treachery from powers far greater.
Walt was pacing when I returned with the report.
“Incredible! What could those iron menaces be up to? What are they doing in the Storm Peaks? And what is this Loken!?” He was already gathering parchment. “I’ll forward this information to our central base of operations in the Dragonblight. I’ll also let ’em know that you were invaluable in the acquisition of said info.”
The construct had worked. But what we’d learned made the vrykul’s buried secrets seem almost trivial. Something vast was moving in the north, and it commanded armies and spoke of freeing a “Father”.
Loken’s transmission named the Storm Peaks and something called Ulduar and Walt sent all of it on to the Dragonblight, though following that thread would have to wait, because there was News From the East and a gryphon handler nearby with a bird that had trust issues.