Also mistaken for fulgurite by the more naturalistically minded, apparently. Maybe most common in the Nordics, based on viking references?
Additional links:
https://www.nationalgeographic.com/science/article/100810-thor-thors-hammer-viking-graves-thunderstones-science
https://fi.wikipedia.org/wiki/Ukonvaaja [Finnish]
To give some numbers, the last period of the stone age (Neolithic) lasted around 2000 years and the bronze age around 1600 years. No wonder they “forgot” what the stone age tools were.
Someone pointed a temperature gun (for Covid testing) at me and for a brief moment, I forgot what they were.
When they’re uncovered 100 years from now, they’ll think we shot lasers at each other.
Don’t we though?
Sidney Harris taught me otherwise.
EDIT: I just saw he turned 91 yesterday. Happy Birthday, Mr. Harris!