Stone circles show Neandertals’ social, technical skills
176,500-year-old stalagmite structures found in French cave
![French cave](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/05/052416_bb_-Neandertal-rings_free.jpg?fit=860%2C460&ssl=1)
ANCIENT RING A new study finds that Neandertals built structures out of stalagmites. Here, a researcher takes measurements of a circular arrangement of stalagmites created in a French cave around 176,500 years ago.
Etienne Fabre/SSAC