No. 9: The Devil’s Millstone (USA)
Source：pixabay
At Judge C.R. Magney State Park in Minnesota, the Brule River splits around a rock. Half the water flows downstream like normal. The other half disappears into a hole called “The Devil’s Millstone,” and nobody knows where it goes.
Nobody knows how deep this thing goes. Scientists have dropped GPS trackers, dye, and ping-pong balls into it, but nothing ever comes back out. Normally, water travels through underground channels and pops up somewhere downstream, but not here.
Source：pixabay
The local Ojibwe people won’t go near it—they call it “the home of evil spirits.” After all the failed experiments, you can see why they’d think that.
No. 8: Lightning Field (USA)
Source：WIKIMEDIA COMMONS
In the New Mexico desert, artist Walter De Maria installed 400 stainless steel poles in a perfect grid back in 1977. It’s called “Lightning Field,” and during thunderstorms, it becomes nature’s most dangerous light show.
Source：Planet-Life
When storms roll through, lightning jumps from pole to pole, creating curtains of electricity that connect the ground to the sky. During summer storm season, people have counted dozens of strikes in a single night, with electricity literally dancing between the poles.
Since you can’t predict lightning, seeing this spectacle is pure luck. It’s like nature’s ultimate slot machine, except this jackpot could actually kill you.
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