Ukraine
Sand Origin
Papernya Pit, Oleshnya, Chernihivs’ka oblast
Random Sand Fact
Can a grain of sand remember the last time it saw sunlight?
It can. When sunlight falls on a grain of quartz sand, it’s reset, like a stopwatch. If the grain then ends up in darkness, it starts counting. Natural radiation from the surrounding ground slowly stores energy in the crystal.
In a dark laboratory, researchers shine a light on the grain, and it glows faintly back. The stronger the glow, the longer the grain has lain in darkness.
At a settlement in western Ukraine, the sand showed that people camped there around 29,000 years ago, in the middle of the Ice Age.
