About MMC
Mullae Metal City, the anvil of Korea’s metal scene
※ Anvil (moru): the block of iron on which a smith hammers heated metal.
Mullae Metal City (MMC) is Korea’s one-of-a-kind heavy metal festival, held every year since it began in 2014 in the ironworks alleys of Mullae-dong, Yeongdeungpo-gu, Seoul. It did not skip a single year, even through COVID, and by its twelfth anniversary in 2025 it had built up 313 bands and 48 days of stage. Having set a genre often called the most non-mainstream of the non-mainstream on the sturdiest stage year after year, MMC is a stronghold of Korea’s heavy metal scene and a rare, precious event that the wider popular music scene cannot easily replace.
In the city of metal, we hammer out the music of metal
This festival could only have happened in Mullae-dong. From the 1960s, small and medium metal casting, foundry and processing businesses gathered here in an ironworks complex where flame, molten iron and roar never stopped. It is a neighborhood where the clang of beaten iron, the sparks of welding and the smell of steel resemble a scene from a black-metal music video. From around 2000, ironworks closed one by one, outcompeted by cheap foreign products, and artists filled the empty spaces. Then, in 2014, when Hongdae’s venues were shrinking under rising rents and falling audiences and metal shows were the first to be cut, a plan to “beat the music of iron in the city of iron” began here.
What MMC does is not a single show but a long-term project. Two different slumps met in Mullae-dong: an independent music genre scene that keeps shrinking, and a manufacturing center in decline. By laying the music of metal over a city of sounds made by working iron, MMC has cast an abstract city, “Metal City”, anew every year. Carrying the Korean metal scene’s hope that Mullae-dong will stand on its own as an independent heavy metal scene, MMC is not an event that consumes a place but an experiment, now more than ten years long, to protect a place and a genre together.
This standing has been proven on site. Seniors who have kept the scene alive since the 1980s and newly debuted bands share a stage, and MMC has become a contact zone where bands and fans from across Asia, including Japan, Taiwan, China and Russia, meet. In 2020, when performances stopped because of the pandemic, MMC made its own guidelines for live shows and made an in-person stage happen. Unusually for popular music, and metal in particular, it was selected as a Seoul Excellent Arts Festival (2021–2023) and then, one step higher, as a Seoul Flagship Arts Festival (2024–2025), gaining recognition as a public arts festival as well.
Welcome to Metal Paradise!
MMC’s principle is simple: a festival that cannot exist except as metal, one that builds a unique worldview rather than widening the boundaries of the genre, so as to create an irreplaceable character. Metal sculptures and artwork made by Mullae-dong artists, and staff and audiences who gather voluntarily despite modest rewards, have built that worldview together. Fighting each year as if there were no tomorrow, yet opening the door to the next year, MMC is still making a place where Korean heavy metal can grow harder.
Where new bands are discovered: Ironman Special
Ironman Special is a sub-brand of MMC that discovers up-and-coming bands, running in seasons since Season 1 in 2019.
