A massive fungus is growing underground in the US state of Oregon, and it is the largest living being on Earth

A giant fungus, Armillaria ostoyae, lives beneath Oregon's Blue Mountains. This single organism spans over 2,300 acres. It consists of a network of mycelium, feeding on dead wood. The mushrooms are just its fruit. Scientists estimate it began growing 8,000 years ago. It decomposes organic matter, enriching the soil. This fungus supports the forest ecosystem.

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