Humongous Fungus Fest

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Humongous Fungus Fest Covering 37+ subterranean acres, this Armillaria gallic is a famous fungus with its own festival.

10/01/2026

πŸ„ YOU HAVE NEVER ACTUALLY SEEN THE HUMONGOUS FUNGUS

No one has.

What you see in the fall, those little honey mushrooms, that's not the organism. That's just its fruit.

Like an apple to an apple tree.

The real fungus is almost entirely underground: a massive, tangled web of mycelium and black, shoelace-like cords called rhizomorphs. The mushrooms are just what it uses to make spores for a few weeks a year.

Here's the wildest part, scientists didn't find it by seeing it.

In 1992, researchers picked mushrooms nearly a mile apart in the forest near Crystal Falls and ran DNA and mating tests in the lab. They all fused together. Same individual. Same clone.

At the time they estimated 1,500 years old and 37 acres. When the original discoverer went back with new DNA tools, he revised it to at least 2,500 years old, about 440 tons, and about 173 acres.

It's invisible. It's under your boots. It's been growing since around 500 BC, before the Roman Empire even existed.

What else do you think is hiding under Iron County? πŸ‘€πŸ‘‡

09/25/2026

πŸ„ MIND = BLOWN 🀯
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OUR FUNGUS HAS A NIGHT LIGHT
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That humongous fungus near Crystal Falls doesn't just sit there being old and heavy β€” it GLOWS.

The threadlike mycelium network which invades the wood, and the infected wood itself, glow a faint bluishgreen light which can be seen on very dark nights.
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And unlike the cute mushrooms you see above ground, this one glows solely from its mycelia parts often hidden under the forest floor. The mushrooms themselves stay dark. The glow is all underground.

Only 71 of more than 100,000 recognized species of fungi produce light in a biochemical process that requires oxygen and energy! Ours is one of them πŸ’š

09/13/2026

BAND WANTED - FRIDAY NIGHT STREET DANCE! πŸŽΈπŸ„

We're starting early planning for Humongous Fungus Fest 2027!

Looking for a local band who would be willing to play OUTSIDE for a Friday Night Street Dance in downtown Crystal Falls during Humungous Fungus Fest weekend August 2027.

πŸ“ Outdoor setup
πŸ•– Friday night - August 2027 (exact fest dates TBA)
🎢 Danceable - classic rock, variety, hits that get people moving
πŸ‘Ÿ Huge, family-friendly crowd

Are you in a band or know one? Tag them below or DM me with your band page!

Please SHARE!

09/08/2026

The Story Behind The Humongous Fungus:

In the late 1980s, a PhD candidate in botany at the University of Toronto named Myron Smith and his colleagues were studying honey mushrooms in the hardwood forests near Crystal Falls. They were trying to figure out where one fungus ended and another began.

What they found in 1992 was massive:
A single individual fungus β€” first called Armillaria bulbosa, later renamed Armillaria gallica β€” covering 37 acres (15 hectares). At the time it was the largest organism ever recorded. They estimated it weighed over 100 tons and was about 1,500 years old.

That same year, Crystal Falls said "we're throwing a party for it" and the Humongous Fungus Fest was founded in 1992. We've done it every year since.

What we know now is even crazier:
About 25 years later, one of the original discoverers, biologist James Anderson, went back and took 245 samples across the site. DNA proved it really is one single individual.

The new numbers from 2018:
β€’ ∼90-91 acres (not 37)
β€’ ∼440 tons β€” as massive as three blue whales
β€’ 2,500 years old and barely mutating β€” one of the oldest living organisms on Earth

How? What you see as honey mushrooms are just the fruit. The real organism is an underground network called mycelium. This species makes thick black shoestring-like tendrils called rhizomorphs that spread acre after acre looking for wood to eat.

It later got beat by an even bigger Armillaria in Oregon (2,384 acres), but ours was the ORIGINAL Humongous Fungus β€” the one that proved fungi could be that big. That's why Crystal Falls still celebrates it.

08/28/2026

If you could add ONE thing to Fungus Fest next year that wasn't there this year, what would it be?!

Or maybe it's MORE of something that WAS there that you just couldn't get enough of? πŸ˜‰

NO IDEA IS TOO WEIRD. This is literally a festival for a 38-acre, 2,500-year-old underground mushroom. We love weird.

More mushroom pizza? More live music? More cold drinks? More kids games? Maybe a beard contest? A food truck or vendor we NEED to bring back or you want to see?

Drop your ideas in the comments and let's make 2027 the most HUMONGOUS one yet!

Humongous Fungus Festival Parade 2026! βœ¨πŸ„Thank you to the wonderful community members who sent in these photos ❀️
08/10/2026

Humongous Fungus Festival Parade 2026! βœ¨πŸ„

Thank you to the wonderful community members who sent in these photos ❀️

08/07/2026

Soapbox Derby 2026
Crystal Falls, Michigan

08/04/2026

Hey Fungus Fest family! πŸ„

If you love the Humongous Fungus Fest, be sure to also LIKE and FOLLOW the Crystal Falls Business Association page!

That's where you'll find dates for all the upcoming fests, community events, Shop Small Saturday, Crystal Christmas, and everything else happening right here in Crystal Falls, Michigan.

Stay in the loop all year long β€” give them a Like! πŸ‘‡
Crystal Falls Business Association

πŸ„βœ¨ WOW! What a turnout for the Humongous Fungus Fest Coloring Contest! βœ¨πŸ„Our hearts are SO full! πŸ’š We were absolutely bl...
08/04/2026

πŸ„βœ¨ WOW! What a turnout for the Humongous Fungus Fest Coloring Contest! βœ¨πŸ„

Our hearts are SO full! πŸ’š We were absolutely blown away by the huge turnout and every single beautiful, creative, colorful design that was turned in. It was fabulous to see all the talent from our amazing community!

We entered every single name who turned in a coloring sheet (almost 80!) and drew 3 lucky winners at random for 1st - 3rd place!

And now... DRUMROLL PLEASE... πŸ₯πŸ₯πŸ₯

πŸ† OUR WINNERS! πŸ†

πŸ₯‡ 1st Place: Lilly Alexa
πŸ₯ˆ 2nd Place: Karleen Fabbri
πŸ₯‰ 3rd Place: Kai Gruesbeck

Huge CONGRATS to our winners!!! πŸŽ‰πŸŽ¨ And a gigantic THANK YOU to EVERYONE who colored and entered! You all are amazing artists and we loved every single one! πŸ’–

Address

Crystal Falls, MI
49920

Opening Hours

Saturday 10am - 3pm
Sunday 10am - 3pm

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