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]
It’s amazing to put into perspective how long both bronze and stone ages really took, especially compared to modernity. Human brains are not good at imagining large quantities or intervals, so it was all kinda smushed up into a folder labeled “past” in my head
Kurzgesagt did this video where they crammed all of Earth’s history in an hour. Basically you look at a barren wasteland for most of the time until life finally goes macroscopic and then all of humanity happens in less than a second
I sat through the whole thing and it’s still incomprehensible