People who are struck by lightning and survive can acquire these branching, fractal scars - Lichtenberg figures - thought to be from capillary damage sustained as the current runs along the skin.
Survived lightning strike
Struck by Jennifer Bosworth - Mia Price's lightning scars (aka Lichtenberg figures)
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Lichtenberg fractal scars after lightning strikes
If you get struck by lightning you get scars like these... or die ...
struck by lightning burns | struck by lightening
This Bison Was Struck by Lightning and Emerged Ugly But Alive
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Lichtenberg figure left on a victim after being struck by lightning