[Fred Nerks]

How Nature Creates Uncannily Spherical Boulders
There’s a geological phenomenon behind exceptionally round rocks.

https://www.atlasobscura.com/articles/concretion-spherical-rocks

There are spherical boulders on every continent, a number on Champ Island in the Arctic:

https://weirdrussia.com/2016/05/14/the-mysterious-stone-spheres-of-champ-island/

[SunkenCiv]

Thanks Fred Nerks!

• 99 Years Later... We Solved It