People built bone circles at the edge of ice sheets, and we don’t know why

As the last Ice Age tightened its hold on Europe, a group of people living near the Don River piled dozens of mammoth bones into a 12.5m (30ft) wide circle. They may have lived in the shelter of the mammoth bones for a while, huddling around fragrant fires of conifer wood and mammoth bone and making stone tools. But the traces they left are so light that it seems they didn’t stay long—or maybe they only visited occasionally.
Read more: https://arstechnica.com/science/2020/03/enigmatic-circles-of-mammoth-bones-in-eastern-europe-date-to-ice-age/?source=Snapzu