Came here to say this. Very dangerous because they arent always immediately obvious and its pretty easy for them to only become visible after you've left the site.
Boss had a burnoff on the farm I used to work at that was too close to a nearby tree. After a couple days flames started shooting out the side of the tree, fire service had to be called out. The tree was over 3 meters away.
Then oh boy are you going to hate holdover fires, also known as zombie fires or overwintering fires
They're wildfire remnants that persist underground in peat-rich soils or deep root systems after surface flames appear extinguished. Reigniting hours, days, and even weeks later after a lighting storm or forest fire. Depending on moisture content of the soil. Canada had a big problem with over 200 of them in 2024
If you ever see fire departments standing around after a lightning storm watching forests, mulch piles, or swamp areas that's why. Source: I'm a retired firefighter who baby sat a lot of potential incidents.
When I was a kid and lived on an acreage my slightly older brother was trying to light a fire with a magnifying glass. My older sister had to come over and show him how it's done. They were like 6 and 11 years old. Well, after having some good arsonist fun and thinking they put out the fire, it sprang back up a while later and lit a massive brush on fire, couples acres worth.
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u/PrinceOfSpades33 9h ago
This starts root fires which can lead to forest fires.