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Underground Gold Veins

Character

The Underground Gold Veins form a sprawling mining complex buried below the Monster Association Headquarters, where monsters extracted rubies, gold, and other minerals. Once Tatsumaki tore the association's stronghold apart, whatever became of these tunnels was left a mystery.

Status: Unknown
First Appearance (Manga): Chapter 129
Allegiances: Monster Association
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Appearance

The site is an immense hollow carved out beneath the surface, threaded with tunnels and chambers that a rail line ties together. Oddly for a place staffed entirely by monsters, it is fitted with distinctly human machinery, including conveyor belts and the railway that moves material through the shafts.

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Personality

Labor here is split along clear lines among the creatures who run it. Some monsters wield sharpened claws to bore fresh passages, beetle-like drones shove loaded minecarts along the tracks, and ant-shaped workers handle grunt tasks while keeping the others organized. Together they form a crude but functional mining operation.

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History

During the assault on the Monster Association, Saitama and Flashy Flash ran into Manako and pressed her into serving as their guide, which sent the trio careening through the shafts aboard a minecart. Working monsters spotted them and a brawl broke out. Saitama snatched a few sacks of gold along the way but sacrificed them to catch Manako as the group plunged over a chasm, a loss he grumbled about even after clearing the drop. Why the monsters bothered mining at all is never confirmed, though the materials most likely fed their allies in the Organization or other unnamed partners. After Tatsumaki leveled the headquarters, the fate of the veins went unrecorded.

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Frequently Asked Questions

What are the Underground Gold Veins?

The Underground Gold Veins are a sprawling mining complex buried beneath the Monster Association Headquarters, where monsters extracted valuable minerals.

What did monsters mine in the Underground Gold Veins?

In the Underground Gold Veins, monsters extracted rubies, gold, and other minerals using surprisingly human-style machinery, including conveyor belts and a railway that moved material through the shafts.

What happened when Saitama and Flashy Flash entered the Underground Gold Veins?

While Saitama and Flashy Flash pressed Manako into guiding them through the Monster Association headquarters, the trio ended up racing through the Underground Gold Veins aboard a minecart. Working monsters spotted them and a brawl broke out, during which Saitama grabbed sacks of gold but sacrificed them to catch Manako as the group plunged over a chasm.

Who worked in the Underground Gold Veins?

Labor in the Underground Gold Veins was split among different monsters, with sharp-clawed creatures boring fresh passages, beetle-like drones shoving loaded minecarts along the tracks, and ant-shaped workers handling grunt tasks and organizing the others.

What happened to the Underground Gold Veins after Tatsumaki destroyed the Monster Association headquarters?

After Tatsumaki leveled the Monster Association headquarters above it, the fate of the Underground Gold Veins went unrecorded.

Sources & Information

Looking for more on Underground Gold Veins? The One-Punch Man Wiki on Fandom has a dedicated page with community notes.

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This content is original writing by Daddy Jim Anime based on the One-Punch Man anime series, manga, and official materials. One-Punch Man was created by ONE and Yusuke Murata, published by Shueisha, and animated by J.C.Staff and Madhouse. All rights to One-Punch Man and its characters belong to their respective owners. Episode and chapter references are cited where applicable.

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